499878258 has 32 divisors (see below), whose sum is σ = 1148048640. Its totient is φ = 143505360.

The previous prime is 499878233. The next prime is 499878259. The reversal of 499878258 is 852878994.

It is a super-2 number, since 2×499878258² = 499756545642229128, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (499878259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198060 + ... + 200567.

It is an arithmetic number, because the mean of its divisors is an integer number (35876520).

Almost surely, 2^499878258 is an apocalyptic number.

499878258 is an abundant number, since it is smaller than the sum of its proper divisors (648170382).

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

499878258 is a wasteful number, since it uses less digits than its factorization.

499878258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398662.

The product of its digits is 11612160, while the sum is 60.

The square root of 499878258 is about 22357.9573753955. The cubic root of 499878258 is about 793.6361029622.

The spelling of 499878258 in words is "four hundred ninety-nine million, eight hundred seventy-eight thousand, two hundred fifty-eight".