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999929797 is a prime number
BaseRepresentation
bin111011100110011…
…011011111000101
32120200112200210221
4323212123133011
54021440223142
6243115544341
733531156136
oct7346333705
92520480727
10999929797
11473486069
1223aa5b0b1
1312c214249
1496b2dc8d
155cbba767
hex3b99b7c5

999929797 has 2 divisors, whose sum is σ = 999929798. Its totient is φ = 999929796.

The previous prime is 999929753. The next prime is 999929867. The reversal of 999929797 is 797929999.

It is an a-pointer prime, because the next prime (999929867) can be obtained adding 999929797 to its sum of digits (70).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 549386721 + 450543076 = 23439^2 + 21226^2 .

It is a cyclic number.

It is not a de Polignac number, because 999929797 - 215 = 999897029 is a prime.

It is a super-2 number, since 2×9999297972 = 1999719197856922418, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999929717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499964898 + 499964899.

It is an arithmetic number, because the mean of its divisors is an integer number (499964899).

Almost surely, 2999929797 is an apocalyptic number.

It is an amenable number.

999929797 is a deficient number, since it is larger than the sum of its proper divisors (1).

999929797 is an equidigital number, since it uses as much as digits as its factorization.

999929797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52081218, while the sum is 70.

The square root of 999929797 is about 31621.6665753088. Note that the first 3 decimals coincide. The cubic root of 999929797 is about 999.9765984524.

The spelling of 999929797 in words is "nine hundred ninety-nine million, nine hundred twenty-nine thousand, seven hundred ninety-seven".