40404039 has 8 divisors (see below), whose sum is σ = 58016112. Its totient is φ = 24864000.

The previous prime is 40404017. The next prime is 40404043. The reversal of 40404039 is 93040404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40404039 - 2⁹ = 40403527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40404139) 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, 517962 + ... + 518039.

It is an arithmetic number, because the mean of its divisors is an integer number (7252014).

Almost surely, 2^40404039 is an apocalyptic number.

40404039 is a deficient number, since it is larger than the sum of its proper divisors (17612073).

40404039 is a wasteful number, since it uses less digits than its factorization.

40404039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036017.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 40404039 is about 6356.4171511945. The cubic root of 40404039 is about 343.1428288253.

The spelling of 40404039 in words is "forty million, four hundred four thousand, thirty-nine".