40439404 has 6 divisors (see below), whose sum is σ = 70768964. Its totient is φ = 20219700.

The previous prime is 40439383. The next prime is 40439417. The reversal of 40439404 is 40493404.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5054922 + ... + 5054929.

Almost surely, 2^40439404 is an apocalyptic number.

It is an amenable number.

40439404 is a deficient number, since it is larger than the sum of its proper divisors (30329560).

40439404 is a wasteful number, since it uses less digits than its factorization.

40439404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10109855 (or 10109853 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 40439404 is about 6359.1983771542. The cubic root of 40439404 is about 343.2429154138.

The spelling of 40439404 in words is "forty million, four hundred thirty-nine thousand, four hundred four".