99475679 has 2 divisors, whose sum is σ = 99475680. Its totient is φ = 99475678.

The previous prime is 99475643. The next prime is 99475681. The reversal of 99475679 is 97657499.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99475679 - 2²⁰ = 98427103 is a prime.

It is a super-2 number, since 2×99475679² = 19790821425022082, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 99475681, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99475639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49737839 + 49737840.

It is an arithmetic number, because the mean of its divisors is an integer number (49737840).

Almost surely, 2^99475679 is an apocalyptic number.

99475679 is a deficient number, since it is larger than the sum of its proper divisors (1).

99475679 is an equidigital number, since it uses as much as digits as its factorization.

99475679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4286520, while the sum is 56.

The square root of 99475679 is about 9973.7494955508. The cubic root of 99475679 is about 463.3462339052.

The spelling of 99475679 in words is "ninety-nine million, four hundred seventy-five thousand, six hundred seventy-nine".