490351789 has 12 divisors (see below), whose sum is σ = 517448736. Its totient is φ = 464595032.

The previous prime is 490351783. The next prime is 490351811. The reversal of 490351789 is 987153094.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-490351789 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 (490351783) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52272 + ... + 60934.

It is an arithmetic number, because the mean of its divisors is an integer number (43120728).

Almost surely, 2^490351789 is an apocalyptic number.

It is an amenable number.

490351789 is a deficient number, since it is larger than the sum of its proper divisors (27096947).

490351789 is a wasteful number, since it uses less digits than its factorization.

490351789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8816 (or 8793 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 490351789 is about 22143.8882990319. Note that the first 3 decimals coincide. The cubic root of 490351789 is about 788.5621386141.

The spelling of 490351789 in words is "four hundred ninety million, three hundred fifty-one thousand, seven hundred eighty-nine".