499371649 has 4 divisors (see below), whose sum is σ = 570710464. Its totient is φ = 428032836.

The previous prime is 499371641. The next prime is 499371667. The reversal of 499371649 is 946173994.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 499371649 - 2³ = 499371641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 499371596 and 499371605.

It is not an unprimeable number, because it can be changed into a prime (499371641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35669397 + ... + 35669410.

It is an arithmetic number, because the mean of its divisors is an integer number (142677616).

Almost surely, 2^499371649 is an apocalyptic number.

It is an amenable number.

499371649 is a deficient number, since it is larger than the sum of its proper divisors (71338815).

499371649 is an equidigital number, since it uses as much as digits as its factorization.

499371649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71338814.

The product of its digits is 1469664, while the sum is 52.

The square root of 499371649 is about 22346.6250024472. The cubic root of 499371649 is about 793.3679049305.

The spelling of 499371649 in words is "four hundred ninety-nine million, three hundred seventy-one thousand, six hundred forty-nine".