490805311 has 8 divisors (see below), whose sum is σ = 508273920. Its totient is φ = 473611992.

The previous prime is 490805269. The next prime is 490805323. The reversal of 490805311 is 113508094.

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 490805311 - 2⁹ = 490804799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490805411) 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, 65191 + ... + 72328.

It is an arithmetic number, because the mean of its divisors is an integer number (63534240).

Almost surely, 2^490805311 is an apocalyptic number.

490805311 is a deficient number, since it is larger than the sum of its proper divisors (17468609).

490805311 is a wasteful number, since it uses less digits than its factorization.

490805311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137645.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 490805311 is about 22154.1262748049. The cubic root of 490805311 is about 788.8051750671.

The spelling of 490805311 in words is "four hundred ninety million, eight hundred five thousand, three hundred eleven".