9999572 has 48 divisors (see below), whose sum is σ = 20490624. Its totient is φ = 4224000.

The previous prime is 9999533. The next prime is 9999593. The reversal of 9999572 is 2759999.

It is a self number, because there is not a number n which added to its sum of digits gives 9999572.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41372 + ... + 41612.

It is an arithmetic number, because the mean of its divisors is an integer number (426888).

Almost surely, 2^9999572 is an apocalyptic number.

9999572 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

9999572 is an abundant number, since it is smaller than the sum of its proper divisors (10491052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9999572 is a wasteful number, since it uses less digits than its factorization.

9999572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320 (or 318 counting only the distinct ones).

The product of its digits is 459270, while the sum is 50.

The square root of 9999572 is about 3162.2099867023. The cubic root of 9999572 is about 215.4403952992.

The spelling of 9999572 in words is "nine million, nine hundred ninety-nine thousand, five hundred seventy-two".