516399941 has 2 divisors, whose sum is σ = 516399942. Its totient is φ = 516399940.

The previous prime is 516399937. The next prime is 516400019. The reversal of 516399941 is 149993615.

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., 504002500 + 12397441 = 22450^2 + 3521^2 .

It is a cyclic number.

It is not a de Polignac number, because 516399941 - 2² = 516399937 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (516399931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258199970 + 258199971.

It is an arithmetic number, because the mean of its divisors is an integer number (258199971).

Almost surely, 2^516399941 is an apocalyptic number.

It is an amenable number.

516399941 is a deficient number, since it is larger than the sum of its proper divisors (1).

516399941 is an equidigital number, since it uses as much as digits as its factorization.

516399941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 262440, while the sum is 47.

The square root of 516399941 is about 22724.4348884631. The cubic root of 516399941 is about 802.2851026055.

The spelling of 516399941 in words is "five hundred sixteen million, three hundred ninety-nine thousand, nine hundred forty-one".