490189839 has 16 divisors (see below), whose sum is σ = 671787360. Its totient is φ = 317813760.

The previous prime is 490189829. The next prime is 490189859. The reversal of 490189839 is 938981094.

It is a happy number.

It is not a de Polignac number, because 490189839 - 2⁵ = 490189807 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 490189791 and 490189800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490189829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1239 + ... + 31335.

It is an arithmetic number, because the mean of its divisors is an integer number (41986710).

Almost surely, 2^490189839 is an apocalyptic number.

490189839 is a deficient number, since it is larger than the sum of its proper divisors (181597521).

490189839 is a wasteful number, since it uses less digits than its factorization.

490189839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30250.

The product of its (nonzero) digits is 559872, while the sum is 51.

The square root of 490189839 is about 22140.2312318548. The cubic root of 490189839 is about 788.4753154372.

The spelling of 490189839 in words is "four hundred ninety million, one hundred eighty-nine thousand, eight hundred thirty-nine".