490813961 has 4 divisors (see below), whose sum is σ = 535433424. Its totient is φ = 446194500.

The previous prime is 490813957. The next prime is 490813963. The reversal of 490813961 is 169318094.

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 a cyclic number.

It is not a de Polignac number, because 490813961 - 2² = 490813957 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (490813963) 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, 22309715 + ... + 22309736.

It is an arithmetic number, because the mean of its divisors is an integer number (133858356).

Almost surely, 2^490813961 is an apocalyptic number.

It is an amenable number.

490813961 is a deficient number, since it is larger than the sum of its proper divisors (44619463).

490813961 is a wasteful number, since it uses less digits than its factorization.

490813961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44619462.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 490813961 is about 22154.3214971707. The cubic root of 490813961 is about 788.8098090326.

The spelling of 490813961 in words is "four hundred ninety million, eight hundred thirteen thousand, nine hundred sixty-one".