972715589 has 2 divisors, whose sum is σ = 972715590. Its totient is φ = 972715588.

The previous prime is 972715559. The next prime is 972715591. The reversal of 972715589 is 985517279.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 615883489 + 356832100 = 24817^2 + 18890^2 .

It is a cyclic number.

It is not a de Polignac number, because 972715589 - 2²⁰ = 971667013 is a prime.

Together with 972715591, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 972715589.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (972715559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486357794 + 486357795.

It is an arithmetic number, because the mean of its divisors is an integer number (486357795).

Almost surely, 2^972715589 is an apocalyptic number.

It is an amenable number.

972715589 is a deficient number, since it is larger than the sum of its proper divisors (1).

972715589 is an equidigital number, since it uses as much as digits as its factorization.

972715589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1587600, while the sum is 53.

The square root of 972715589 is about 31188.3886887412. The cubic root of 972715589 is about 990.8212038059.

The spelling of 972715589 in words is "nine hundred seventy-two million, seven hundred fifteen thousand, five hundred eighty-nine".