99090392 has 8 divisors (see below), whose sum is σ = 185794500. Its totient is φ = 49545192.

The previous prime is 99090391. The next prime is 99090401. The reversal of 99090392 is 29309099.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99090391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6193142 + ... + 6193157.

Almost surely, 2^99090392 is an apocalyptic number.

It is an amenable number.

99090392 is a deficient number, since it is larger than the sum of its proper divisors (86704108).

99090392 is a wasteful number, since it uses less digits than its factorization.

99090392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12386305 (or 12386301 counting only the distinct ones).

The product of its (nonzero) digits is 39366, while the sum is 41.

The square root of 99090392 is about 9954.4157035961. The cubic root of 99090392 is about 462.7472524556.

The spelling of 99090392 in words is "ninety-nine million, ninety thousand, three hundred ninety-two".