99999392 has 24 divisors (see below), whose sum is σ = 197116416. Its totient is φ = 49938112.

The previous prime is 99999373. The next prime is 99999401. The reversal of 99999392 is 29399999.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35873 + ... + 38559.

It is an arithmetic number, because the mean of its divisors is an integer number (8213184).

Almost surely, 2^99999392 is an apocalyptic number.

It is an amenable number.

99999392 is a deficient number, since it is larger than the sum of its proper divisors (97117024).

99999392 is a wasteful number, since it uses less digits than its factorization.

99999392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3860 (or 3852 counting only the distinct ones).

The product of its digits is 3188646, while the sum is 59.

The square root of 99999392 is about 9999.9695999538. The cubic root of 99999392 is about 464.1579426640.

It can be divided in two parts, 9999 and 9392, that added together give a palindrome (19391).

The spelling of 99999392 in words is "ninety-nine million, nine hundred ninety-nine thousand, three hundred ninety-two".