499040409 has 8 divisors (see below), whose sum is σ = 760442560. Its totient is φ = 285165936.

The previous prime is 499040363. The next prime is 499040411. The reversal of 499040409 is 904040994.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 499040409 - 2⁷ = 499040281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (499040429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11881894 + ... + 11881935.

It is an arithmetic number, because the mean of its divisors is an integer number (95055320).

Almost surely, 2^499040409 is an apocalyptic number.

It is an amenable number.

499040409 is a deficient number, since it is larger than the sum of its proper divisors (261402151).

499040409 is a wasteful number, since it uses less digits than its factorization.

499040409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23763839.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 499040409 is about 22339.2123630176. The cubic root of 499040409 is about 793.1924488936.

The spelling of 499040409 in words is "four hundred ninety-nine million, forty thousand, four hundred nine".