499578361 has 8 divisors (see below), whose sum is σ = 517351424. Its totient is φ = 481908960.

The previous prime is 499578323. The next prime is 499578413. The reversal of 499578361 is 163875994.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 499578361 - 2²¹ = 497481209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 499578299 and 499578308.

It is not an unprimeable number, because it can be changed into a prime (499578061) 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, 16041 + ... + 35446.

It is an arithmetic number, because the mean of its divisors is an integer number (64668928).

Almost surely, 2^499578361 is an apocalyptic number.

499578361 is the 12905-th hex number.

It is an amenable number.

499578361 is a deficient number, since it is larger than the sum of its proper divisors (17773063).

499578361 is a wasteful number, since it uses less digits than its factorization.

499578361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51831.

The product of its digits is 1632960, while the sum is 52.

The square root of 499578361 is about 22351.2496518651. The cubic root of 499578361 is about 793.4773598446.

The spelling of 499578361 in words is "four hundred ninety-nine million, five hundred seventy-eight thousand, three hundred sixty-one".