493909877 has 2 divisors, whose sum is σ = 493909878. Its totient is φ = 493909876.

The previous prime is 493909873. The next prime is 493909901. The reversal of 493909877 is 778909394.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 473758756 + 20151121 = 21766^2 + 4489^2 .

It is a cyclic number.

It is not a de Polignac number, because 493909877 - 2² = 493909873 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 (493909873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246954938 + 246954939.

It is an arithmetic number, because the mean of its divisors is an integer number (246954939).

Almost surely, 2^493909877 is an apocalyptic number.

It is an amenable number.

493909877 is a deficient number, since it is larger than the sum of its proper divisors (1).

493909877 is an equidigital number, since it uses as much as digits as its factorization.

493909877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3429216, while the sum is 56.

The square root of 493909877 is about 22224.0832656827. The cubic root of 493909877 is about 790.4648639353.

The spelling of 493909877 in words is "four hundred ninety-three million, nine hundred nine thousand, eight hundred seventy-seven".