99212499 has 8 divisors (see below), whose sum is σ = 146981520. Its totient is φ = 66141648.

The previous prime is 99212417. The next prime is 99212507. The reversal of 99212499 is 99421299.

It is not a de Polignac number, because 99212499 - 2²³ = 90823891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99212299) 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, 1837242 + ... + 1837295.

It is an arithmetic number, because the mean of its divisors is an integer number (18372690).

Almost surely, 2^99212499 is an apocalyptic number.

99212499 is a deficient number, since it is larger than the sum of its proper divisors (47769021).

99212499 is a wasteful number, since it uses less digits than its factorization.

99212499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3674546 (or 3674540 counting only the distinct ones).

The product of its digits is 104976, while the sum is 45.

The square root of 99212499 is about 9960.5471235269. The cubic root of 99212499 is about 462.9372523256.

The spelling of 99212499 in words is "ninety-nine million, two hundred twelve thousand, four hundred ninety-nine".