961099397 has 2 divisors, whose sum is σ = 961099398. Its totient is φ = 961099396.

The previous prime is 961099361. The next prime is 961099427. The reversal of 961099397 is 793990169.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 879359716 + 81739681 = 29654^2 + 9041^2 .

It is a cyclic number.

It is not a de Polignac number, because 961099397 - 2⁸ = 961099141 is a prime.

It is a super-3 number, since 3×961099397³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (961099897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480549698 + 480549699.

It is an arithmetic number, because the mean of its divisors is an integer number (480549699).

Almost surely, 2^961099397 is an apocalyptic number.

It is an amenable number.

961099397 is a deficient number, since it is larger than the sum of its proper divisors (1).

961099397 is an equidigital number, since it uses as much as digits as its factorization.

961099397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 826686, while the sum is 53.

The square root of 961099397 is about 31001.6031359670. The cubic root of 961099397 is about 986.8612619264.

The spelling of 961099397 in words is "nine hundred sixty-one million, ninety-nine thousand, three hundred ninety-seven".