99960399 has 120 divisors (see below), whose sum is σ = 197750784. Its totient is φ = 49183200.

The previous prime is 99960397. The next prime is 99960437. The reversal of 99960399 is 99306999.

It is not a de Polignac number, because 99960399 - 2¹ = 99960397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99960397) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 2126794 + ... + 2126840.

Almost surely, 2^99960399 is an apocalyptic number.

99960399 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

99960399 is a deficient number, since it is larger than the sum of its proper divisors (97790385).

99960399 is a wasteful number, since it uses less digits than its factorization.

99960399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119 (or 99 counting only the distinct ones).

The product of its (nonzero) digits is 1062882, while the sum is 54.

The square root of 99960399 is about 9998.0197539313. The cubic root of 99960399 is about 464.0976047518.

The spelling of 99960399 in words is "ninety-nine million, nine hundred sixty thousand, three hundred ninety-nine".