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99926921 is a prime number
BaseRepresentation
bin1011111010011…
…00001110001001
320222000210222002
411331030032021
5201040130141
613525440345
72322236063
oct575141611
9228023862
1099926921
1151451636
12295700b5
1317919473
14d3b2733
158b8ce9b
hex5f4c389

99926921 has 2 divisors, whose sum is σ = 99926922. Its totient is φ = 99926920.

The previous prime is 99926851. The next prime is 99926923. The reversal of 99926921 is 12962999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99900025 + 26896 = 9995^2 + 164^2 .

It is a cyclic number.

It is not a de Polignac number, because 99926921 - 218 = 99664777 is a prime.

Together with 99926923, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99926923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49963460 + 49963461.

It is an arithmetic number, because the mean of its divisors is an integer number (49963461).

Almost surely, 299926921 is an apocalyptic number.

It is an amenable number.

99926921 is a deficient number, since it is larger than the sum of its proper divisors (1).

99926921 is an equidigital number, since it uses as much as digits as its factorization.

99926921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 157464, while the sum is 47.

The square root of 99926921 is about 9996.3453821884. The cubic root of 99926921 is about 464.0457882504.

The spelling of 99926921 in words is "ninety-nine million, nine hundred twenty-six thousand, nine hundred twenty-one".