99031879 has 2 divisors, whose sum is σ = 99031880. Its totient is φ = 99031878.

The previous prime is 99031871. The next prime is 99031883. The reversal of 99031879 is 97813099.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99031879 - 2³ = 99031871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99031871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49515939 + 49515940.

It is an arithmetic number, because the mean of its divisors is an integer number (49515940).

Almost surely, 2^99031879 is an apocalyptic number.

99031879 is a deficient number, since it is larger than the sum of its proper divisors (1).

99031879 is an equidigital number, since it uses as much as digits as its factorization.

99031879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 46.

The square root of 99031879 is about 9951.4762221492. The cubic root of 99031879 is about 462.6561502448.

The spelling of 99031879 in words is "ninety-nine million, thirty-one thousand, eight hundred seventy-nine".