99390930 has 32 divisors (see below), whose sum is σ = 238849344. Its totient is φ = 26469696.

The previous prime is 99390913. The next prime is 99390979. The reversal of 99390930 is 3909399.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28249 + ... + 31571.

It is an arithmetic number, because the mean of its divisors is an integer number (7464042).

Almost surely, 2^99390930 is an apocalyptic number.

It is a pronic number, being equal to 9969×9970.

99390930 is an abundant number, since it is smaller than the sum of its proper divisors (139458414).

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

99390930 is a wasteful number, since it uses less digits than its factorization.

99390930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4330.

The product of its (nonzero) digits is 59049, while the sum is 42.

The square root of 99390930 is about 9969.4999874618. The cubic root of 99390930 is about 463.2146128321.

It can be divided in two parts, 9 and 9390930, that added together give a palindrome (9390939).

The spelling of 99390930 in words is "ninety-nine million, three hundred ninety thousand, nine hundred thirty".