9720253947 has 32 divisors (see below), whose sum is σ = 13757414400. Its totient is φ = 6087578112.

The previous prime is 9720253943. The next prime is 9720253957. The reversal of 9720253947 is 7493520279.

It is not a de Polignac number, because 9720253947 - 2² = 9720253943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9720253896 and 9720253905.

It is not an unprimeable number, because it can be changed into a prime (9720253943) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4564579 + ... + 4566707.

It is an arithmetic number, because the mean of its divisors is an integer number (429919200).

Almost surely, 2^9720253947 is an apocalyptic number.

9720253947 is a deficient number, since it is larger than the sum of its proper divisors (4037160453).

9720253947 is a wasteful number, since it uses less digits than its factorization.

9720253947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2787.

The product of its (nonzero) digits is 952560, while the sum is 48.

The square root of 9720253947 is about 98591.3482360395. The cubic root of 9720253947 is about 2134.1545681779.

The spelling of 9720253947 in words is "nine billion, seven hundred twenty million, two hundred fifty-three thousand, nine hundred forty-seven".