499999615 has 16 divisors (see below), whose sum is σ = 621362016. Its totient is φ = 386006400.

The previous prime is 499999613. The next prime is 499999693. The reversal of 499999615 is 516999994.

It is not a de Polignac number, because 499999615 - 2¹ = 499999613 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499999613) 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, 700 + ... + 31630.

It is an arithmetic number, because the mean of its divisors is an integer number (38835126).

Almost surely, 2^499999615 is an apocalyptic number.

499999615 is a deficient number, since it is larger than the sum of its proper divisors (121362401).

499999615 is a wasteful number, since it uses less digits than its factorization.

499999615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31050.

The product of its digits is 7085880, while the sum is 61.

The square root of 499999615 is about 22360.6711661345. The cubic root of 499999615 is about 793.7003222676.

The spelling of 499999615 in words is "four hundred ninety-nine million, nine hundred ninety-nine thousand, six hundred fifteen".