99957590 has 16 divisors (see below), whose sum is σ = 184312800. Its totient is φ = 39007680.

The previous prime is 99957587. The next prime is 99957593. The reversal of 99957590 is 9575999.

It is an interprime number because it is at equal distance from previous prime (99957587) and next prime (99957593).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99957593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121490 + ... + 122309.

It is an arithmetic number, because the mean of its divisors is an integer number (11519550).

Almost surely, 2^99957590 is an apocalyptic number.

99957590 is a deficient number, since it is larger than the sum of its proper divisors (84355210).

99957590 is a wasteful number, since it uses less digits than its factorization.

99957590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243847.

The product of its (nonzero) digits is 1148175, while the sum is 53.

The square root of 99957590 is about 9997.8792751263. The cubic root of 99957590 is about 464.0932574889.

It can be divided in two parts, 9 and 9957590, that added together give a palindrome (9957599).

The spelling of 99957590 in words is "ninety-nine million, nine hundred fifty-seven thousand, five hundred ninety".