961099361 has 2 divisors, whose sum is σ = 961099362. Its totient is φ = 961099360.

The previous prime is 961099351. The next prime is 961099397. The reversal of 961099361 is 163990169.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 940342225 + 20757136 = 30665^2 + 4556^2 .

It is a cyclic number.

It is not a de Polignac number, because 961099361 - 2¹⁴ = 961082977 is a prime.

It is a super-3 number, since 3×961099361³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (961099351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480549680 + 480549681.

It is an arithmetic number, because the mean of its divisors is an integer number (480549681).

Almost surely, 2^961099361 is an apocalyptic number.

It is an amenable number.

961099361 is a deficient number, since it is larger than the sum of its proper divisors (1).

961099361 is an equidigital number, since it uses as much as digits as its factorization.

961099361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 78732, while the sum is 44.

The square root of 961099361 is about 31001.6025553519. The cubic root of 961099361 is about 986.8612496047.

It can be divided in two parts, 96 and 1099361, that multiplied together give a triangular number (105538656 = T₁₄₅₂₈).

The spelling of 961099361 in words is "nine hundred sixty-one million, ninety-nine thousand, three hundred sixty-one".