499218478 has 16 divisors (see below), whose sum is σ = 818110080. Its totient is φ = 226582200.

The previous prime is 499218463. The next prime is 499218487. The reversal of 499218478 is 874812994.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1218 + ... + 31621.

It is an arithmetic number, because the mean of its divisors is an integer number (51131880).

Almost surely, 2^499218478 is an apocalyptic number.

499218478 is a deficient number, since it is larger than the sum of its proper divisors (318891602).

499218478 is a wasteful number, since it uses less digits than its factorization.

499218478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33543.

The product of its digits is 1161216, while the sum is 52.

The square root of 499218478 is about 22343.1975777864. The cubic root of 499218478 is about 793.2867807268.

The spelling of 499218478 in words is "four hundred ninety-nine million, two hundred eighteen thousand, four hundred seventy-eight".