499810979 has 4 divisors (see below), whose sum is σ = 526116840. Its totient is φ = 473505120.

The previous prime is 499810963. The next prime is 499811063. The reversal of 499810979 is 979018994.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 979018994 = 2 ⋅489509497.

It is a cyclic number.

It is not a de Polignac number, because 499810979 - 2⁴ = 499810963 is a prime.

It is a super-2 number, since 2×499810979² = 499622029457876882, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (499810919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13152902 + ... + 13152939.

It is an arithmetic number, because the mean of its divisors is an integer number (131529210).

Almost surely, 2^499810979 is an apocalyptic number.

499810979 is a deficient number, since it is larger than the sum of its proper divisors (26305861).

499810979 is a wasteful number, since it uses less digits than its factorization.

499810979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26305860.

The product of its (nonzero) digits is 1469664, while the sum is 56.

The square root of 499810979 is about 22356.4527374089. The cubic root of 499810979 is about 793.6004959998.

The spelling of 499810979 in words is "four hundred ninety-nine million, eight hundred ten thousand, nine hundred seventy-nine".