649448924 has 12 divisors (see below), whose sum is σ = 1137858624. Its totient is φ = 324346464.

The previous prime is 649448893. The next prime is 649448929. The reversal of 649448924 is 429844946.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649448929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90617 + ... + 97520.

It is an arithmetic number, because the mean of its divisors is an integer number (94821552).

Almost surely, 2^649448924 is an apocalyptic number.

It is an amenable number.

649448924 is a deficient number, since it is larger than the sum of its proper divisors (488409700).

649448924 is a wasteful number, since it uses less digits than its factorization.

649448924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189004 (or 189002 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 50.

The square root of 649448924 is about 25484.2877867913. The cubic root of 649448924 is about 865.9942342900.

The spelling of 649448924 in words is "six hundred forty-nine million, four hundred forty-eight thousand, nine hundred twenty-four".