40644794 has 16 divisors (see below), whose sum is σ = 62209728. Its totient is φ = 19912032.

The previous prime is 40644763. The next prime is 40644823. The reversal of 40644794 is 49744604.

It is a happy 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, 23549 + ... + 25215.

It is an arithmetic number, because the mean of its divisors is an integer number (3888108).

Almost surely, 2^40644794 is an apocalyptic number.

40644794 is a deficient number, since it is larger than the sum of its proper divisors (21564934).

40644794 is a wasteful number, since it uses less digits than its factorization.

40644794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1909.

The product of its (nonzero) digits is 96768, while the sum is 38.

The square root of 40644794 is about 6375.3269720070. The cubic root of 40644794 is about 343.8230397302.

The spelling of 40644794 in words is "forty million, six hundred forty-four thousand, seven hundred ninety-four".