490747669 has 4 divisors (see below), whose sum is σ = 497659680. Its totient is φ = 483835660.

The previous prime is 490747661. The next prime is 490747679. The reversal of 490747669 is 966747094.

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 490747669 - 2³ = 490747661 is a prime.

It is a super-2 number, since 2×490747669² = 481666549257867122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490747661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3455899 + ... + 3456040.

It is an arithmetic number, because the mean of its divisors is an integer number (124414920).

Almost surely, 2^490747669 is an apocalyptic number.

It is an amenable number.

490747669 is a deficient number, since it is larger than the sum of its proper divisors (6912011).

490747669 is an equidigital number, since it uses as much as digits as its factorization.

490747669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6912010.

The product of its (nonzero) digits is 2286144, while the sum is 52.

The square root of 490747669 is about 22152.8253051388. The cubic root of 490747669 is about 788.7742937875.

The spelling of 490747669 in words is "four hundred ninety million, seven hundred forty-seven thousand, six hundred sixty-nine".