649422492 has 12 divisors (see below), whose sum is σ = 1515319176. Its totient is φ = 216474160.

The previous prime is 649422479. The next prime is 649422509. The reversal of 649422492 is 294224946.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27059259 + ... + 27059282.

It is an arithmetic number, because the mean of its divisors is an integer number (126276598).

Almost surely, 2^649422492 is an apocalyptic number.

It is an amenable number.

649422492 is an abundant number, since it is smaller than the sum of its proper divisors (865896684).

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

649422492 is a wasteful number, since it uses less digits than its factorization.

649422492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54118548 (or 54118546 counting only the distinct ones).

The product of its digits is 248832, while the sum is 42.

The square root of 649422492 is about 25483.7691874652. The cubic root of 649422492 is about 865.9824857294.

The spelling of 649422492 in words is "six hundred forty-nine million, four hundred twenty-two thousand, four hundred ninety-two".