864915941 has 2 divisors, whose sum is σ = 864915942. Its totient is φ = 864915940.

The previous prime is 864915913. The next prime is 864915977. The reversal of 864915941 is 149519468.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 861129025 + 3786916 = 29345^2 + 1946^2 .

It is a cyclic number.

It is not a de Polignac number, because 864915941 - 2²⁶ = 797807077 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (864915911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432457970 + 432457971.

It is an arithmetic number, because the mean of its divisors is an integer number (432457971).

Almost surely, 2^864915941 is an apocalyptic number.

It is an amenable number.

864915941 is a deficient number, since it is larger than the sum of its proper divisors (1).

864915941 is an equidigital number, since it uses as much as digits as its factorization.

864915941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 47.

The square root of 864915941 is about 29409.4532591138. The cubic root of 864915941 is about 952.7770784536. Note that the first 3 decimals are identical.

The spelling of 864915941 in words is "eight hundred sixty-four million, nine hundred fifteen thousand, nine hundred forty-one".