99512405 has 8 divisors (see below), whose sum is σ = 125700000. Its totient is φ = 75419856.

The previous prime is 99512389. The next prime is 99512423. The reversal of 99512405 is 50421599.

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

It is a cyclic number.

It is not a de Polignac number, because 99512405 - 2⁴ = 99512389 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 523655 + ... + 523844.

It is an arithmetic number, because the mean of its divisors is an integer number (15712500).

Almost surely, 2^99512405 is an apocalyptic number.

99512405 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

99512405 is a deficient number, since it is larger than the sum of its proper divisors (26187595).

99512405 is a wasteful number, since it uses less digits than its factorization.

99512405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047523.

The product of its (nonzero) digits is 16200, while the sum is 35.

The square root of 99512405 is about 9975.5904587147. The cubic root of 99512405 is about 463.4032487126.

The spelling of 99512405 in words is "ninety-nine million, five hundred twelve thousand, four hundred five".