499991607 has 24 divisors (see below), whose sum is σ = 766196496. Its totient is φ = 313103616.

The previous prime is 499991599. The next prime is 499991623. The reversal of 499991607 is 706199994.

499991607 is a `hidden beast` number, since 499 + 9 + 91 + 60 + 7 = 666.

It is not a de Polignac number, because 499991607 - 2³ = 499991599 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499991647) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 82288 + ... + 88154.

It is an arithmetic number, because the mean of its divisors is an integer number (31924854).

Almost surely, 2^499991607 is an apocalyptic number.

499991607 is a deficient number, since it is larger than the sum of its proper divisors (266204889).

499991607 is a wasteful number, since it uses less digits than its factorization.

499991607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6447 (or 6444 counting only the distinct ones).

The product of its (nonzero) digits is 1102248, while the sum is 54.

The square root of 499991607 is about 22360.4921010250. The cubic root of 499991607 is about 793.6960849402.

The spelling of 499991607 in words is "four hundred ninety-nine million, nine hundred ninety-one thousand, six hundred seven".