99390738 has 16 divisors (see below), whose sum is σ = 210474720. Its totient is φ = 31181376.

The previous prime is 99390737. The next prime is 99390763. The reversal of 99390738 is 83709399.

It is not an unprimeable number, because it can be changed into a prime (99390737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 487108 + ... + 487311.

It is an arithmetic number, because the mean of its divisors is an integer number (13154670).

Almost surely, 2^99390738 is an apocalyptic number.

99390738 is an abundant number, since it is smaller than the sum of its proper divisors (111083982).

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

99390738 is a wasteful number, since it uses less digits than its factorization.

99390738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974441.

The product of its (nonzero) digits is 367416, while the sum is 48.

The square root of 99390738 is about 9969.4903580875. The cubic root of 99390738 is about 463.2143145579.

It can be divided in two parts, 99390 and 738, that added together give a triangular number (100128 = T₄₄₇).

The spelling of 99390738 in words is "ninety-nine million, three hundred ninety thousand, seven hundred thirty-eight".