490656938 has 4 divisors (see below), whose sum is σ = 735985410. Its totient is φ = 245328468.

The previous prime is 490656919. The next prime is 490656967. The reversal of 490656938 is 839656094.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 285508609 + 205148329 = 16897^2 + 14323^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 122664233 + ... + 122664236.

Almost surely, 2^490656938 is an apocalyptic number.

490656938 is a deficient number, since it is larger than the sum of its proper divisors (245328472).

490656938 is a wasteful number, since it uses less digits than its factorization.

490656938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245328471.

The product of its (nonzero) digits is 1399680, while the sum is 50.

The square root of 490656938 is about 22150.7773678487. Note that the first 3 decimals coincide. The cubic root of 490656938 is about 788.7256804193.

The spelling of 490656938 in words is "four hundred ninety million, six hundred fifty-six thousand, nine hundred thirty-eight".