490974589 has 4 divisors (see below), whose sum is σ = 561113824. Its totient is φ = 420835356.

The previous prime is 490974587. The next prime is 490974607. The reversal of 490974589 is 985479094.

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, and also an emirpimes, since its reverse is a distinct semiprime: 985479094 = 2 ⋅492739547.

It is a cyclic number.

It is not a de Polignac number, because 490974589 - 2¹ = 490974587 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490974581) 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, 35069607 + ... + 35069620.

It is an arithmetic number, because the mean of its divisors is an integer number (140278456).

Almost surely, 2^490974589 is an apocalyptic number.

It is an amenable number.

490974589 is a deficient number, since it is larger than the sum of its proper divisors (70139235).

490974589 is an equidigital number, since it uses as much as digits as its factorization.

490974589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70139234.

The product of its (nonzero) digits is 3265920, while the sum is 55.

The square root of 490974589 is about 22157.9464075532. The cubic root of 490974589 is about 788.8958505421.

The spelling of 490974589 in words is "four hundred ninety million, nine hundred seventy-four thousand, five hundred eighty-nine".