494908957 has 4 divisors (see below), whose sum is σ = 495442620. Its totient is φ = 494375296.

The previous prime is 494908951. The next prime is 494909021. The reversal of 494908957 is 759809494.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 209265156 + 285643801 = 14466^2 + 16901^2 .

It is a cyclic number.

It is not a de Polignac number, because 494908957 - 2²⁷ = 360691229 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 494908898 and 494908907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (494908951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265438 + ... + 267295.

It is an arithmetic number, because the mean of its divisors is an integer number (123860655).

Almost surely, 2^494908957 is an apocalyptic number.

It is an amenable number.

494908957 is a deficient number, since it is larger than the sum of its proper divisors (533663).

494908957 is an equidigital number, since it uses as much as digits as its factorization.

494908957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533662.

The product of its (nonzero) digits is 3265920, while the sum is 55.

The square root of 494908957 is about 22246.5493279295. The cubic root of 494908957 is about 790.9974885951.

The spelling of 494908957 in words is "four hundred ninety-four million, nine hundred eight thousand, nine hundred fifty-seven".