411915961 has 2 divisors, whose sum is σ = 411915962. Its totient is φ = 411915960.

The previous prime is 411915923. The next prime is 411915979. The reversal of 411915961 is 169519114.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 400760361 + 11155600 = 20019^2 + 3340^2 .

It is a cyclic number.

It is not a de Polignac number, because 411915961 - 2²³ = 403527353 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 411915961.

It is not a weakly prime, because it can be changed into another prime (411916961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 205957980 + 205957981.

It is an arithmetic number, because the mean of its divisors is an integer number (205957981).

Almost surely, 2^411915961 is an apocalyptic number.

It is an amenable number.

411915961 is a deficient number, since it is larger than the sum of its proper divisors (1).

411915961 is an equidigital number, since it uses as much as digits as its factorization.

411915961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9720, while the sum is 37.

The square root of 411915961 is about 20295.7128724270. The cubic root of 411915961 is about 744.0512891233.

The spelling of 411915961 in words is "four hundred eleven million, nine hundred fifteen thousand, nine hundred sixty-one".