499261609 has 48 divisors (see below), whose sum is σ = 654998400. Its totient is φ = 372176640.

The previous prime is 499261591. The next prime is 499261639. The reversal of 499261609 is 906162994.

It is not a de Polignac number, because 499261609 - 2¹⁷ = 499130537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (499261639) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2789082 + ... + 2789260.

It is an arithmetic number, because the mean of its divisors is an integer number (13645800).

Almost surely, 2^499261609 is an apocalyptic number.

It is an amenable number.

499261609 is a deficient number, since it is larger than the sum of its proper divisors (155736791).

499261609 is a wasteful number, since it uses less digits than its factorization.

499261609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334 (or 323 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 46.

The square root of 499261609 is about 22344.1627500338. The cubic root of 499261609 is about 793.3096259461.

The spelling of 499261609 in words is "four hundred ninety-nine million, two hundred sixty-one thousand, six hundred nine".