499957986 has 32 divisors (see below), whose sum is σ = 1120304448. Its totient is φ = 147407040.

The previous prime is 499957961. The next prime is 499957993. The reversal of 499957986 is 689759994.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99925 + ... + 104808.

It is an arithmetic number, because the mean of its divisors is an integer number (35009514).

Almost surely, 2^499957986 is an apocalyptic number.

499957986 is an abundant number, since it is smaller than the sum of its proper divisors (620346462).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

499957986 is a wasteful number, since it uses less digits than its factorization.

499957986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204786.

The product of its digits is 44089920, while the sum is 66.

The square root of 499957986 is about 22359.7402936617. The cubic root of 499957986 is about 793.6782943388.

The spelling of 499957986 in words is "four hundred ninety-nine million, nine hundred fifty-seven thousand, nine hundred eighty-six".