649239846 has 16 divisors (see below), whose sum is σ = 1298846064. Its totient is φ = 216352224.

The previous prime is 649239803. The next prime is 649239847. The reversal of 649239846 is 648932946.

649239846 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649239847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11340 + ... + 37776.

It is an arithmetic number, because the mean of its divisors is an integer number (81177879).

Almost surely, 2^649239846 is an apocalyptic number.

649239846 is an abundant number, since it is smaller than the sum of its proper divisors (649606218).

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

649239846 is a wasteful number, since it uses less digits than its factorization.

649239846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30535.

The product of its digits is 2239488, while the sum is 51.

The square root of 649239846 is about 25480.1853603933. The cubic root of 649239846 is about 865.9012940710.

The spelling of 649239846 in words is "six hundred forty-nine million, two hundred thirty-nine thousand, eight hundred forty-six".