649404930 has 32 divisors (see below), whose sum is σ = 1650253824. Its totient is φ = 162987776.

The previous prime is 649404929. The next prime is 649404941. The reversal of 649404930 is 39404946.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 636162 + ... + 637181.

It is an arithmetic number, because the mean of its divisors is an integer number (51570432).

Almost surely, 2^649404930 is an apocalyptic number.

649404930 is an abundant number, since it is smaller than the sum of its proper divisors (1000848894).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

649404930 is a wasteful number, since it uses less digits than its factorization.

649404930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1273370.

The product of its (nonzero) digits is 93312, while the sum is 39.

The square root of 649404930 is about 25483.4246128734. The cubic root of 649404930 is about 865.9746795520.

The spelling of 649404930 in words is "six hundred forty-nine million, four hundred four thousand, nine hundred thirty".