99512999 has 4 divisors (see below), whose sum is σ = 101199720. Its totient is φ = 97826280.

The previous prime is 99512993. The next prime is 99513031. The reversal of 99512999 is 99921599.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99921599 = 61 ⋅1638059.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99512999 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99512999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99512993) 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 3 ways as a sum of consecutive naturals, for example, 843272 + ... + 843389.

It is an arithmetic number, because the mean of its divisors is an integer number (25299930).

Almost surely, 2^99512999 is an apocalyptic number.

99512999 is a deficient number, since it is larger than the sum of its proper divisors (1686721).

99512999 is a wasteful number, since it uses less digits than its factorization.

99512999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686720.

The product of its digits is 590490, while the sum is 53.

The square root of 99512999 is about 9975.6202313440. The cubic root of 99512999 is about 463.4041707450.

The spelling of 99512999 in words is "ninety-nine million, five hundred twelve thousand, nine hundred ninety-nine".