99572993 has 8 divisors (see below), whose sum is σ = 109726848. Its totient is φ = 89775504.

The previous prime is 99572983. The next prime is 99573043. The reversal of 99572993 is 39927599.

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

It is not a de Polignac number, because 99572993 - 2⁶ = 99572929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99572903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88505 + ... + 89622.

It is an arithmetic number, because the mean of its divisors is an integer number (13715856).

Almost surely, 2^99572993 is an apocalyptic number.

It is an amenable number.

99572993 is a deficient number, since it is larger than the sum of its proper divisors (10153855).

99572993 is a wasteful number, since it uses less digits than its factorization.

99572993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178183.

The product of its digits is 1377810, while the sum is 53.

The square root of 99572993 is about 9978.6268093360. The cubic root of 99572993 is about 463.4972771231.

The spelling of 99572993 in words is "ninety-nine million, five hundred seventy-two thousand, nine hundred ninety-three".