494809587 has 16 divisors (see below), whose sum is σ = 736128000. Its totient is φ = 328488552.

The previous prime is 494809543. The next prime is 494809639. The reversal of 494809587 is 785908494.

It is not a de Polignac number, because 494809587 - 2²⁰ = 493761011 is a prime.

It is a super-2 number, since 2×494809587² = 489673054774221138, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (494809517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31887 + ... + 44792.

It is an arithmetic number, because the mean of its divisors is an integer number (46008000).

Almost surely, 2^494809587 is an apocalyptic number.

494809587 is a deficient number, since it is larger than the sum of its proper divisors (241318413).

494809587 is a wasteful number, since it uses less digits than its factorization.

494809587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76927 (or 76921 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The square root of 494809587 is about 22244.3158357366. The cubic root of 494809587 is about 790.9445450651.

The spelling of 494809587 in words is "four hundred ninety-four million, eight hundred nine thousand, five hundred eighty-seven".