99290440 has 32 divisors (see below), whose sum is σ = 228602880. Its totient is φ = 38791872.

The previous prime is 99290437. The next prime is 99290441. The reversal of 99290440 is 4409299.

It is a self number, because there is not a number n which added to its sum of digits gives 99290440.

It is not an unprimeable number, because it can be changed into a prime (99290441) 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, 27144 + ... + 30583.

It is an arithmetic number, because the mean of its divisors is an integer number (7143840).

Almost surely, 2^99290440 is an apocalyptic number.

It is an amenable number.

99290440 is an abundant number, since it is smaller than the sum of its proper divisors (129312440).

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

99290440 is a wasteful number, since it uses less digits than its factorization.

99290440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57781 (or 57777 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 99290440 is about 9964.4588413019. The cubic root of 99290440 is about 463.0584479018.

The spelling of 99290440 in words is "ninety-nine million, two hundred ninety thousand, four hundred forty".