490398857 has 8 divisors (see below), whose sum is σ = 529388160. Its totient is φ = 451590480.

The previous prime is 490398841. The next prime is 490398859. The reversal of 490398857 is 758893094.

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 490398857 - 2⁴ = 490398841 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 490398799 and 490398808.

It is not an unprimeable number, because it can be changed into a prime (490398859) 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, 39569 + ... + 50462.

It is an arithmetic number, because the mean of its divisors is an integer number (66173520).

Almost surely, 2^490398857 is an apocalyptic number.

It is an amenable number.

490398857 is a deficient number, since it is larger than the sum of its proper divisors (38989303).

490398857 is a wasteful number, since it uses less digits than its factorization.

490398857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90463.

The product of its (nonzero) digits is 2177280, while the sum is 53.

The square root of 490398857 is about 22144.9510498443. The cubic root of 490398857 is about 788.5873687013.

The spelling of 490398857 in words is "four hundred ninety million, three hundred ninety-eight thousand, eight hundred fifty-seven".