499728779 has 4 divisors (see below), whose sum is σ = 545158680. Its totient is φ = 454298880.

The previous prime is 499728763. The next prime is 499728781. The reversal of 499728779 is 977827994.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 499728779 - 2⁴ = 499728763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (499728739) 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, 22714934 + ... + 22714955.

It is an arithmetic number, because the mean of its divisors is an integer number (136289670).

Almost surely, 2^499728779 is an apocalyptic number.

499728779 is a deficient number, since it is larger than the sum of its proper divisors (45429901).

499728779 is a wasteful number, since it uses less digits than its factorization.

499728779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45429900.

The product of its digits is 16003008, while the sum is 62.

The square root of 499728779 is about 22354.6142664104. The cubic root of 499728779 is about 793.5569878604.

The spelling of 499728779 in words is "four hundred ninety-nine million, seven hundred twenty-eight thousand, seven hundred seventy-nine".