490910863 has 4 divisors (see below), whose sum is σ = 492821280. Its totient is φ = 489000448.

The previous prime is 490910837. The next prime is 490910879. The reversal of 490910863 is 368019094.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 490910863 - 2⁵ = 490910831 is a prime.

It is a super-2 number, since 2×490910863² = 481986950822809538, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490910813) 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, 954823 + ... + 955336.

It is an arithmetic number, because the mean of its divisors is an integer number (123205320).

Almost surely, 2^490910863 is an apocalyptic number.

490910863 is a deficient number, since it is larger than the sum of its proper divisors (1910417).

490910863 is a wasteful number, since it uses less digits than its factorization.

490910863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1910416.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 490910863 is about 22156.5083666177. The cubic root of 490910863 is about 788.8617175114.

The spelling of 490910863 in words is "four hundred ninety million, nine hundred ten thousand, eight hundred sixty-three".