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999951949 is a prime number
BaseRepresentation
bin111011100110100…
…000111001001101
32120200120211012101
4323212200321031
54021441430244
6243120235101
733531310543
oct7346407115
92520524171
10999951949
114734a0777
1223aa6ba91
1312c221359
1496b37d93
155cbc20d4
hex3b9a0e4d

999951949 has 2 divisors, whose sum is σ = 999951950. Its totient is φ = 999951948.

The previous prime is 999951941. The next prime is 999952013. The reversal of 999951949 is 949159999.

It is an a-pointer prime, because the next prime (999952013) can be obtained adding 999951949 to its sum of digits (64).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 564395049 + 435556900 = 23757^2 + 20870^2 .

It is a cyclic number.

It is not a de Polignac number, because 999951949 - 23 = 999951941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999951941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499975974 + 499975975.

It is an arithmetic number, because the mean of its divisors is an integer number (499975975).

Almost surely, 2999951949 is an apocalyptic number.

It is an amenable number.

999951949 is a deficient number, since it is larger than the sum of its proper divisors (1).

999951949 is an equidigital number, since it uses as much as digits as its factorization.

999951949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10628820, while the sum is 64.

The square root of 999951949 is about 31622.0168395376. The cubic root of 999951949 is about 999.9839827434.

The spelling of 999951949 in words is "nine hundred ninety-nine million, nine hundred fifty-one thousand, nine hundred forty-nine".