961437089 has 2 divisors, whose sum is σ = 961437090. Its totient is φ = 961437088.

The previous prime is 961437077. The next prime is 961437133. The reversal of 961437089 is 980734169.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 804686689 + 156750400 = 28367^2 + 12520^2 .

It is a cyclic number.

It is not a de Polignac number, because 961437089 - 2²⁸ = 693001633 is a prime.

It is a super-2 number, since 2×961437089² = 1848722552209587842, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (961437019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480718544 + 480718545.

It is an arithmetic number, because the mean of its divisors is an integer number (480718545).

Almost surely, 2^961437089 is an apocalyptic number.

It is an amenable number.

961437089 is a deficient number, since it is larger than the sum of its proper divisors (1).

961437089 is an equidigital number, since it uses as much as digits as its factorization.

961437089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 961437089 is about 31007.0490211500. The cubic root of 961437089 is about 986.9768296228.

The spelling of 961437089 in words is "nine hundred sixty-one million, four hundred thirty-seven thousand, eighty-nine".