490446639 has 12 divisors (see below), whose sum is σ = 745708600. Its totient is φ = 309755664.

The previous prime is 490446613. The next prime is 490446653. The reversal of 490446639 is 936644094.

It is a happy number.

490446639 is a `hidden beast` number, since 4 + 9 + 0 + 4 + 4 + 6 + 639 = 666.

It is not a de Polignac number, because 490446639 - 2⁷ = 490446511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 490446594 and 490446603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490446239) 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, 1433884 + ... + 1434225.

Almost surely, 2^490446639 is an apocalyptic number.

490446639 is a deficient number, since it is larger than the sum of its proper divisors (255261961).

490446639 is a wasteful number, since it uses less digits than its factorization.

490446639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2868134 (or 2868131 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The square root of 490446639 is about 22146.0298699338. The cubic root of 490446639 is about 788.6129798662.

The spelling of 490446639 in words is "four hundred ninety million, four hundred forty-six thousand, six hundred thirty-nine".