490990667 has 4 divisors (see below), whose sum is σ = 491165736. Its totient is φ = 490815600.

The previous prime is 490990663. The next prime is 490990681. The reversal of 490990667 is 766099094.

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 490990667 - 2² = 490990663 is a prime.

It is a super-2 number, since 2×490990667² = 482143670162209778, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (490990663) 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, 83258 + ... + 88959.

It is an arithmetic number, because the mean of its divisors is an integer number (122791434).

Almost surely, 2^490990667 is an apocalyptic number.

490990667 is a deficient number, since it is larger than the sum of its proper divisors (175069).

490990667 is a wasteful number, since it uses less digits than its factorization.

490990667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175068.

The product of its (nonzero) digits is 734832, while the sum is 50.

The square root of 490990667 is about 22158.3092089627. The cubic root of 490990667 is about 788.9044618018.

The spelling of 490990667 in words is "four hundred ninety million, nine hundred ninety thousand, six hundred sixty-seven".