99287397 has 24 divisors (see below), whose sum is σ = 161685440. Its totient is φ = 60172200.

The previous prime is 99287393. The next prime is 99287399. The reversal of 99287397 is 79378299.

It is not a de Polignac number, because 99287397 - 2² = 99287393 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99287393) 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 23 ways as a sum of consecutive naturals, for example, 11929 + ... + 18462.

Almost surely, 2^99287397 is an apocalyptic number.

It is an amenable number.

99287397 is a deficient number, since it is larger than the sum of its proper divisors (62398043).

99287397 is a wasteful number, since it uses less digits than its factorization.

99287397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30422 (or 30405 counting only the distinct ones).

The product of its digits is 1714608, while the sum is 54.

The square root of 99287397 is about 9964.3061474445. The cubic root of 99287397 is about 463.0537173314.

It can be divided in two parts, 99 and 287397, that added together give a cube (287496 = 66³).

The spelling of 99287397 in words is "ninety-nine million, two hundred eighty-seven thousand, three hundred ninety-seven".