972159959 has 2 divisors, whose sum is σ = 972159960. Its totient is φ = 972159958.

The previous prime is 972159931. The next prime is 972159967. The reversal of 972159959 is 959951279.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-972159959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (972159259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486079979 + 486079980.

It is an arithmetic number, because the mean of its divisors is an integer number (486079980).

Almost surely, 2^972159959 is an apocalyptic number.

972159959 is a deficient number, since it is larger than the sum of its proper divisors (1).

972159959 is an equidigital number, since it uses as much as digits as its factorization.

972159959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2296350, while the sum is 56.

The square root of 972159959 is about 31179.4797743644. The cubic root of 972159959 is about 990.6325104719.

The spelling of 972159959 in words is "nine hundred seventy-two million, one hundred fifty-nine thousand, nine hundred fifty-nine".