961140377 has 2 divisors, whose sum is σ = 961140378. Its totient is φ = 961140376.

The previous prime is 961140361. The next prime is 961140391. The reversal of 961140377 is 773041169.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 723394816 + 237745561 = 26896^2 + 15419^2 .

It is a cyclic number.

It is not a de Polignac number, because 961140377 - 2⁴ = 961140361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 961140377.

It is not a weakly prime, because it can be changed into another prime (961140317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480570188 + 480570189.

It is an arithmetic number, because the mean of its divisors is an integer number (480570189).

Almost surely, 2^961140377 is an apocalyptic number.

It is an amenable number.

961140377 is a deficient number, since it is larger than the sum of its proper divisors (1).

961140377 is an equidigital number, since it uses as much as digits as its factorization.

961140377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 961140377 is about 31002.2640624842. The cubic root of 961140377 is about 986.8752878776.

The spelling of 961140377 in words is "nine hundred sixty-one million, one hundred forty thousand, three hundred seventy-seven".