99390408 has 32 divisors (see below), whose sum is σ = 267590400. Its totient is φ = 30581568.

The previous prime is 99390377. The next prime is 99390409. The reversal of 99390408 is 80409399.

It is a self number, because there is not a number n which added to its sum of digits gives 99390408.

It is not an unprimeable number, because it can be changed into a prime (99390409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158968 + ... + 159591.

It is an arithmetic number, because the mean of its divisors is an integer number (8362200).

Almost surely, 2^99390408 is an apocalyptic number.

It is an amenable number.

99390408 is an abundant number, since it is smaller than the sum of its proper divisors (168199992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99390408 is a wasteful number, since it uses less digits than its factorization.

99390408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318581 (or 318577 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 99390408 is about 9969.4738075788. The cubic root of 99390408 is about 463.2138018981.

The spelling of 99390408 in words is "ninety-nine million, three hundred ninety thousand, four hundred eight".