40439854 has 16 divisors (see below), whose sum is σ = 74658528. Its totient is φ = 15998112.

The previous prime is 40439837. The next prime is 40439879. The reversal of 40439854 is 45893404.

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, 110917 + ... + 111280.

It is an arithmetic number, because the mean of its divisors is an integer number (4666158).

Almost surely, 2^40439854 is an apocalyptic number.

40439854 is a deficient number, since it is larger than the sum of its proper divisors (34218674).

40439854 is a wasteful number, since it uses less digits than its factorization.

40439854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222219.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 40439854 is about 6359.2337588738. The cubic root of 40439854 is about 343.2441885840.

The spelling of 40439854 in words is "forty million, four hundred thirty-nine thousand, eight hundred fifty-four".