99912607 has 4 divisors (see below), whose sum is σ = 102236200. Its totient is φ = 97589016.

The previous prime is 99912581. The next prime is 99912629. The reversal of 99912607 is 70621999.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-99912607 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43), and also a Moran number because the ratio is a prime number: 2323549 = 99912607 / (9 + 9 + 9 + 1 + 2 + 6 + 0 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99918607) 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, 1161732 + ... + 1161817.

It is an arithmetic number, because the mean of its divisors is an integer number (25559050).

Almost surely, 2^99912607 is an apocalyptic number.

99912607 is a deficient number, since it is larger than the sum of its proper divisors (2323593).

99912607 is a wasteful number, since it uses less digits than its factorization.

99912607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2323592.

The product of its (nonzero) digits is 61236, while the sum is 43.

The square root of 99912607 is about 9995.6293948905. The cubic root of 99912607 is about 464.0236298286.

The spelling of 99912607 in words is "ninety-nine million, nine hundred twelve thousand, six hundred seven".