499817505 has 32 divisors (see below), whose sum is σ = 890984448. Its totient is φ = 237176000.

The previous prime is 499817501. The next prime is 499817537. The reversal of 499817505 is 505718994.

It is not a de Polignac number, because 499817505 - 2² = 499817501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (499817501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24471 + ... + 39980.

It is an arithmetic number, because the mean of its divisors is an integer number (27843264).

Almost surely, 2^499817505 is an apocalyptic number.

It is an amenable number.

499817505 is a deficient number, since it is larger than the sum of its proper divisors (391166943).

499817505 is a wasteful number, since it uses less digits than its factorization.

499817505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64517.

The product of its (nonzero) digits is 453600, while the sum is 48.

The square root of 499817505 is about 22356.5986903196. The cubic root of 499817505 is about 793.6039499817.

The spelling of 499817505 in words is "four hundred ninety-nine million, eight hundred seventeen thousand, five hundred five".