490865491 has 8 divisors (see below), whose sum is σ = 494017920. Its totient is φ = 487720128.

The previous prime is 490865483. The next prime is 490865503. The reversal of 490865491 is 194568094.

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 490865491 - 2³ = 490865483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (490865461) 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, 221310 + ... + 223516.

It is an arithmetic number, because the mean of its divisors is an integer number (61752240).

Almost surely, 2^490865491 is an apocalyptic number.

490865491 is a deficient number, since it is larger than the sum of its proper divisors (3152429).

490865491 is a wasteful number, since it uses less digits than its factorization.

490865491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3533.

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 490865491 is about 22155.4844451662. The cubic root of 490865491 is about 788.8374134817.

The spelling of 490865491 in words is "four hundred ninety million, eight hundred sixty-five thousand, four hundred ninety-one".