99812499 has 8 divisors (see below), whose sum is σ = 134304720. Its totient is φ = 65930976.

The previous prime is 99812497. The next prime is 99812507. The reversal of 99812499 is 99421899.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 99812499 - 2¹ = 99812497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99812497) 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 7 ways as a sum of consecutive naturals, for example, 152292 + ... + 152945.

It is an arithmetic number, because the mean of its divisors is an integer number (16788090).

Almost surely, 2^99812499 is an apocalyptic number.

99812499 is a deficient number, since it is larger than the sum of its proper divisors (34492221).

99812499 is a wasteful number, since it uses less digits than its factorization.

99812499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305349.

The product of its digits is 419904, while the sum is 51.

The square root of 99812499 is about 9990.6205512971. The cubic root of 99812499 is about 463.8686010089.

The spelling of 99812499 in words is "ninety-nine million, eight hundred twelve thousand, four hundred ninety-nine".