40647944 has 32 divisors (see below), whose sum is σ = 79107840. Its totient is φ = 19560000.

The previous prime is 40647889. The next prime is 40647961. The reversal of 40647944 is 44974604.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 40647898 and 40647907.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61922 + ... + 62574.

It is an arithmetic number, because the mean of its divisors is an integer number (2472120).

Almost surely, 2^40647944 is an apocalyptic number.

It is an amenable number.

40647944 is a deficient number, since it is larger than the sum of its proper divisors (38459896).

40647944 is a wasteful number, since it uses less digits than its factorization.

40647944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941 (or 937 counting only the distinct ones).

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

The square root of 40647944 is about 6375.5740133732. The cubic root of 40647944 is about 343.8319216762.

The spelling of 40647944 in words is "forty million, six hundred forty-seven thousand, nine hundred forty-four".