499897515 has 32 divisors (see below), whose sum is σ = 867605760. Its totient is φ = 244319616.

The previous prime is 499897493. The next prime is 499897549. The reversal of 499897515 is 515798994.

It is not a de Polignac number, because 499897515 - 2¹⁰ = 499896491 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17884 + ... + 36326.

It is an arithmetic number, because the mean of its divisors is an integer number (27112680).

Almost surely, 2^499897515 is an apocalyptic number.

499897515 is a deficient number, since it is larger than the sum of its proper divisors (367708245).

499897515 is a wasteful number, since it uses less digits than its factorization.

499897515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18603.

The product of its digits is 4082400, while the sum is 57.

The square root of 499897515 is about 22358.3880232901. The cubic root of 499897515 is about 793.6462940130.

The spelling of 499897515 in words is "four hundred ninety-nine million, eight hundred ninety-seven thousand, five hundred fifteen".