490932649 has 3 divisors (see below), whose sum is σ = 490954807. Its totient is φ = 490910492.

The previous prime is 490932641. The next prime is 490932661. The reversal of 490932649 is 946239094.

The square root of 490932649 is 22157.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 419225625 + 71707024 = 20475^2 + 8468^2 .

It is not a de Polignac number, because 490932649 - 2³ = 490932641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 490932599 and 490932608.

It is not an unprimeable number, because it can be changed into a prime (490932641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 11079 + ... + 33235.

Almost surely, 2^490932649 is an apocalyptic number.

490932649 is the 22157-th square number.

490932649 is the 11079-th centered octagonal number.

It is an amenable number.

490932649 is a deficient number, since it is larger than the sum of its proper divisors (22158).

490932649 is an frugal number, since it uses more digits than its factorization.

490932649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44314 (or 22157 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 46.

The cubic root of 490932649 is about 788.8733868988.

Multiplying 490932649 by its product of nonzero digits (419904), we get a square (206144583045696 = 14357736²).

The spelling of 490932649 in words is "four hundred ninety million, nine hundred thirty-two thousand, six hundred forty-nine".