490261857 has 8 divisors (see below), whose sum is σ = 664762080. Its totient is φ = 321301440.

The previous prime is 490261843. The next prime is 490261873. The reversal of 490261857 is 758162094.

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

It is not a de Polignac number, because 490261857 - 2⁸ = 490261601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (490261897) 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, 1384744 + ... + 1385097.

It is an arithmetic number, because the mean of its divisors is an integer number (83095260).

Almost surely, 2^490261857 is an apocalyptic number.

It is an amenable number.

490261857 is a deficient number, since it is larger than the sum of its proper divisors (174500223).

490261857 is a wasteful number, since it uses less digits than its factorization.

490261857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2769903.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 490261857 is about 22141.8575778998. The cubic root of 490261857 is about 788.5139274402.

The spelling of 490261857 in words is "four hundred ninety million, two hundred sixty-one thousand, eight hundred fifty-seven".