961475939 has 2 divisors, whose sum is σ = 961475940. Its totient is φ = 961475938.

The previous prime is 961475917. The next prime is 961475951. The reversal of 961475939 is 939574169.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 961475939 - 2²⁴ = 944698723 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is equal to p_48986882 and since 961475939 and 48986882 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (961475909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480737969 + 480737970.

It is an arithmetic number, because the mean of its divisors is an integer number (480737970).

Almost surely, 2^961475939 is an apocalyptic number.

961475939 is a deficient number, since it is larger than the sum of its proper divisors (1).

961475939 is an equidigital number, since it uses as much as digits as its factorization.

961475939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1837080, while the sum is 53.

The square root of 961475939 is about 31007.6754852730. The cubic root of 961475939 is about 986.9901234492.

The spelling of 961475939 in words is "nine hundred sixty-one million, four hundred seventy-five thousand, nine hundred thirty-nine".