99078899 has 4 divisors (see below), whose sum is σ = 99161136. Its totient is φ = 98996664.

The previous prime is 99078853. The next prime is 99078913. The reversal of 99078899 is 99887099.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 99078899 - 2⁸ = 99078643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99078809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39284 + ... + 41729.

It is an arithmetic number, because the mean of its divisors is an integer number (24790284).

Almost surely, 2^99078899 is an apocalyptic number.

99078899 is a deficient number, since it is larger than the sum of its proper divisors (82237).

99078899 is a wasteful number, since it uses less digits than its factorization.

99078899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82236.

The product of its (nonzero) digits is 2939328, while the sum is 59.

The square root of 99078899 is about 9953.8384053590. The cubic root of 99078899 is about 462.7293611825.

The spelling of 99078899 in words is "ninety-nine million, seventy-eight thousand, eight hundred ninety-nine".