972240913 has 32 divisors (see below), whose sum is σ = 1164764160. Its totient is φ = 794327040.

The previous prime is 972240911. The next prime is 972240917. The reversal of 972240913 is 319042279.

972240913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 972240913 - 2¹ = 972240911 is a prime.

It is a super-2 number, since 2×972240913² = 1890504785822147138, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (972240911) 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, 3106045 + ... + 3106357.

It is an arithmetic number, because the mean of its divisors is an integer number (36398880).

Almost surely, 2^972240913 is an apocalyptic number.

It is an amenable number.

972240913 is a deficient number, since it is larger than the sum of its proper divisors (192523247).

972240913 is a wasteful number, since it uses less digits than its factorization.

972240913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 972240913 is about 31180.7779409046. Note that the first 3 decimals coincide. The cubic root of 972240913 is about 990.6600071260.

The spelling of 972240913 in words is "nine hundred seventy-two million, two hundred forty thousand, nine hundred thirteen".