9992972824 has 8 divisors (see below), whose sum is σ = 18736824060. Its totient is φ = 4996486408.

The previous prime is 9992972819. The next prime is 9992972837. The reversal of 9992972824 is 4282792999.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×9992972824² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 624560794 + ... + 624560809.

Almost surely, 2^9992972824 is an apocalyptic number.

It is an amenable number.

9992972824 is a deficient number, since it is larger than the sum of its proper divisors (8743851236).

9992972824 is a wasteful number, since it uses less digits than its factorization.

9992972824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1249121609 (or 1249121605 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 61.

The square root of 9992972824 is about 99964.8579451799. The cubic root of 9992972824 is about 2153.9299187179.

The spelling of 9992972824 in words is "nine billion, nine hundred ninety-two million, nine hundred seventy-two thousand, eight hundred twenty-four".