499884779 has 4 divisors (see below), whose sum is σ = 529289784. Its totient is φ = 470479776.

The previous prime is 499884773. The next prime is 499884793. The reversal of 499884779 is 977488994.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 977488994 = 2 ⋅488744497.

It is a cyclic number.

It is not a de Polignac number, because 499884779 - 2⁸ = 499884523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (499884773) 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, 14702477 + ... + 14702510.

It is an arithmetic number, because the mean of its divisors is an integer number (132322446).

Almost surely, 2^499884779 is an apocalyptic number.

499884779 is a deficient number, since it is larger than the sum of its proper divisors (29405005).

499884779 is a wasteful number, since it uses less digits than its factorization.

499884779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29405004.

The product of its digits is 36578304, while the sum is 65.

The square root of 499884779 is about 22358.1032066676. The cubic root of 499884779 is about 793.6395539882.

The spelling of 499884779 in words is "four hundred ninety-nine million, eight hundred eighty-four thousand, seven hundred seventy-nine".