99412287 has 16 divisors (see below), whose sum is σ = 142937088. Its totient is φ = 61094880.

The previous prime is 99412231. The next prime is 99412321. The reversal of 99412287 is 78221499.

It is not a de Polignac number, because 99412287 - 2⁸ = 99412031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99412207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41862 + ... + 44172.

It is an arithmetic number, because the mean of its divisors is an integer number (8933568).

Almost surely, 2^99412287 is an apocalyptic number.

99412287 is a deficient number, since it is larger than the sum of its proper divisors (43524801).

99412287 is a wasteful number, since it uses less digits than its factorization.

99412287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3430.

The product of its digits is 72576, while the sum is 42.

The square root of 99412287 is about 9970.5710468358. The cubic root of 99412287 is about 463.2477887835.

It can be divided in two parts, 9941228 and 7, that multiplied together give a palindrome (69588596).

The spelling of 99412287 in words is "ninety-nine million, four hundred twelve thousand, two hundred eighty-seven".