490367991 has 8 divisors (see below), whose sum is σ = 657989104. Its totient is φ = 324829440.

The previous prime is 490367963. The next prime is 490368007. The reversal of 490367991 is 199763094.

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

It is not a de Polignac number, because 490367991 - 2⁷ = 490367863 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 490367991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490367921) 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, 520090 + ... + 521031.

It is an arithmetic number, because the mean of its divisors is an integer number (82248638).

Almost surely, 2^490367991 is an apocalyptic number.

490367991 is a deficient number, since it is larger than the sum of its proper divisors (167621113).

490367991 is a wasteful number, since it uses less digits than its factorization.

490367991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1041281.

The product of its (nonzero) digits is 367416, while the sum is 48.

The square root of 490367991 is about 22144.2541305866. The cubic root of 490367991 is about 788.5708236326.

The spelling of 490367991 in words is "four hundred ninety million, three hundred sixty-seven thousand, nine hundred ninety-one".