970595921 has 2 divisors, whose sum is σ = 970595922. Its totient is φ = 970595920.

The previous prime is 970595903. The next prime is 970595947. The reversal of 970595921 is 129595079.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 630562321 + 340033600 = 25111^2 + 18440^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-970595921 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (970595321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 485297960 + 485297961.

It is an arithmetic number, because the mean of its divisors is an integer number (485297961).

Almost surely, 2^970595921 is an apocalyptic number.

It is an amenable number.

970595921 is a deficient number, since it is larger than the sum of its proper divisors (1).

970595921 is an equidigital number, since it uses as much as digits as its factorization.

970595921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 255150, while the sum is 47.

The square root of 970595921 is about 31154.3884709683. The cubic root of 970595921 is about 990.1009729341.

The spelling of 970595921 in words is "nine hundred seventy million, five hundred ninety-five thousand, nine hundred twenty-one".