490402049 has 8 divisors (see below), whose sum is σ = 494519688. Its totient is φ = 486292480.

The previous prime is 490402039. The next prime is 490402069. The reversal of 490402049 is 940204094.

It can be written as a sum of positive squares in 4 ways, for example, as 209236225 + 281165824 = 14465^2 + 16768^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 490402049 - 2²⁸ = 221966593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (490402019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201689 + ... + 204105.

It is an arithmetic number, because the mean of its divisors is an integer number (61814961).

Almost surely, 2^490402049 is an apocalyptic number.

It is an amenable number.

490402049 is a deficient number, since it is larger than the sum of its proper divisors (4117639).

490402049 is a wasteful number, since it uses less digits than its factorization.

490402049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4035.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 490402049 is about 22145.0231203311. The cubic root of 490402049 is about 788.5890796661.

The spelling of 490402049 in words is "four hundred ninety million, four hundred two thousand, forty-nine".