494999986 has 24 divisors (see below), whose sum is σ = 825759684. Its totient is φ = 222281280.

The previous prime is 494999983. The next prime is 494999987. The reversal of 494999986 is 689999494.

It can be written as a sum of positive squares in 6 ways, for example, as 212255761 + 282744225 = 14569^2 + 16815^2 .

It is a super-2 number, since 2×494999986² = 490049972280000392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (494999983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7285 + ... + 32296.

Almost surely, 2^494999986 is an apocalyptic number.

494999986 is a deficient number, since it is larger than the sum of its proper divisors (330759698).

494999986 is a wasteful number, since it uses less digits than its factorization.

494999986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39646 (or 39633 counting only the distinct ones).

The product of its digits is 45349632, while the sum is 67.

The square root of 494999986 is about 22248.5951466604. The cubic root of 494999986 is about 791.0459818888.

The spelling of 494999986 in words is "four hundred ninety-four million, nine hundred ninety-nine thousand, nine hundred eighty-six".