961899313 has 2 divisors, whose sum is σ = 961899314. Its totient is φ = 961899312.

The previous prime is 961899299. The next prime is 961899391. The reversal of 961899313 is 313998169.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 778242609 + 183656704 = 27897^2 + 13552^2 .

It is a cyclic number.

It is not a de Polignac number, because 961899313 - 2²¹ = 959802161 is a prime.

It is not a weakly prime, because it can be changed into another prime (961899613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480949656 + 480949657.

It is an arithmetic number, because the mean of its divisors is an integer number (480949657).

Almost surely, 2^961899313 is an apocalyptic number.

It is an amenable number.

961899313 is a deficient number, since it is larger than the sum of its proper divisors (1).

961899313 is an equidigital number, since it uses as much as digits as its factorization.

961899313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 314928, while the sum is 49.

The square root of 961899313 is about 31014.5016564832. The cubic root of 961899313 is about 987.1349718087.

The spelling of 961899313 in words is "nine hundred sixty-one million, eight hundred ninety-nine thousand, three hundred thirteen".