6440924 has 24 divisors (see below), whose sum is σ = 13560960. Its totient is φ = 2614896.

The previous prime is 6440893. The next prime is 6440933. The reversal of 6440924 is 4290446.

6440924 is a modest number, since divided by 924 gives 644 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5522 + ... + 6585.

It is an arithmetic number, because the mean of its divisors is an integer number (565040).

Almost surely, 2^6440924 is an apocalyptic number.

It is an amenable number.

6440924 is an abundant number, since it is smaller than the sum of its proper divisors (7120036).

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

6440924 is a wasteful number, since it uses less digits than its factorization.

6440924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12137 (or 12135 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 6440924 is about 2537.8975550640. The cubic root of 6440924 is about 186.0584469654.

The spelling of 6440924 in words is "six million, four hundred forty thousand, nine hundred twenty-four".