649495392 has 432 divisors, whose sum is σ = 2313178560. Its totient is φ = 158505984.

The previous prime is 649495369. The next prime is 649495393. The reversal of 649495392 is 293594946.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649495393) 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 71 ways as a sum of consecutive naturals, for example, 15104523 + ... + 15104565.

It is an arithmetic number, because the mean of its divisors is an integer number (5354580).

Almost surely, 2^649495392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 649495392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1156589280).

649495392 is an abundant number, since it is smaller than the sum of its proper divisors (1663683168).

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

649495392 is a wasteful number, since it uses less digits than its factorization.

649495392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115 (or 87 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 51.

The square root of 649495392 is about 25485.1994694960. The cubic root of 649495392 is about 866.0148877286.

The spelling of 649495392 in words is "six hundred forty-nine million, four hundred ninety-five thousand, three hundred ninety-two".