40439974 has 16 divisors (see below), whose sum is σ = 64631088. Its totient is φ = 18911232.

The previous prime is 40439969. The next prime is 40439977. The reversal of 40439974 is 47993404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40439977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1894 + ... + 9190.

It is an arithmetic number, because the mean of its divisors is an integer number (4039443).

Almost surely, 2^40439974 is an apocalyptic number.

40439974 is a deficient number, since it is larger than the sum of its proper divisors (24191114).

40439974 is a wasteful number, since it uses less digits than its factorization.

40439974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7479.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 40439974 is about 6359.2431939658. The cubic root of 40439974 is about 343.2445280945.

The spelling of 40439974 in words is "forty million, four hundred thirty-nine thousand, nine hundred seventy-four".