972443865 has 16 divisors (see below), whose sum is σ = 1589015808. Its totient is φ = 507601536.

The previous prime is 972443851. The next prime is 972443869. The reversal of 972443865 is 568344279.

It is not a de Polignac number, because 972443865 - 2¹⁷ = 972312793 is a prime.

It is a super-2 number, since 2×972443865² = 1891294141152276450, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (972443869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 688972 + ... + 690381.

It is an arithmetic number, because the mean of its divisors is an integer number (99313488).

Almost surely, 2^972443865 is an apocalyptic number.

It is an amenable number.

972443865 is a deficient number, since it is larger than the sum of its proper divisors (616571943).

972443865 is a wasteful number, since it uses less digits than its factorization.

972443865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1379408.

The product of its digits is 1451520, while the sum is 48.

The square root of 972443865 is about 31184.0322120152. The cubic root of 972443865 is about 990.7289346379.

The spelling of 972443865 in words is "nine hundred seventy-two million, four hundred forty-three thousand, eight hundred sixty-five".