99940488 has 32 divisors (see below), whose sum is σ = 252283200. Its totient is φ = 32989248.

The previous prime is 99940429. The next prime is 99940499. The reversal of 99940488 is 88404999.

It is a super-2 number, since 2×99940488² = 19976202283356288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 99940488.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17743 + ... + 22686.

It is an arithmetic number, because the mean of its divisors is an integer number (7883850).

Almost surely, 2^99940488 is an apocalyptic number.

It is an amenable number.

99940488 is an abundant number, since it is smaller than the sum of its proper divisors (152342712).

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

99940488 is a wasteful number, since it uses less digits than its factorization.

99940488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40541 (or 40537 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 51.

The square root of 99940488 is about 9997.0239571585. The cubic root of 99940488 is about 464.0667883448.

The spelling of 99940488 in words is "ninety-nine million, nine hundred forty thousand, four hundred eighty-eight".