494695139 has 4 divisors (see below), whose sum is σ = 495838056. Its totient is φ = 493552224.

The previous prime is 494695111. The next prime is 494695141. The reversal of 494695139 is 931596494.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-494695139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (494695739) 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, 570809 + ... + 571674.

It is an arithmetic number, because the mean of its divisors is an integer number (123959514).

Almost surely, 2^494695139 is an apocalyptic number.

494695139 is a deficient number, since it is larger than the sum of its proper divisors (1142917).

494695139 is a wasteful number, since it uses less digits than its factorization.

494695139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1142916.

The product of its digits is 1049760, while the sum is 50.

The square root of 494695139 is about 22241.7431645993. The cubic root of 494695139 is about 790.8835593151.

The spelling of 494695139 in words is "four hundred ninety-four million, six hundred ninety-five thousand, one hundred thirty-nine".