99965047 has 24 divisors (see below), whose sum is σ = 126243600. Its totient is φ = 78454656.

The previous prime is 99965027. The next prime is 99965051. The reversal of 99965047 is 74056999.

It is a de Polignac number, because none of the positive numbers 2^k-99965047 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99965027) 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 23 ways as a sum of consecutive naturals, for example, 87979 + ... + 89107.

It is an arithmetic number, because the mean of its divisors is an integer number (5260150).

Almost surely, 2^99965047 is an apocalyptic number.

99965047 is a deficient number, since it is larger than the sum of its proper divisors (26278553).

99965047 is a wasteful number, since it uses less digits than its factorization.

99965047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295 (or 1288 counting only the distinct ones).

The product of its (nonzero) digits is 612360, while the sum is 49.

The square root of 99965047 is about 9998.2521972593. The cubic root of 99965047 is about 464.1047979078.

The spelling of 99965047 in words is "ninety-nine million, nine hundred sixty-five thousand, forty-seven".