40044002439 has 16 divisors (see below), whose sum is σ = 61559430912. Its totient is φ = 22679787648.

The previous prime is 40044002437. The next prime is 40044002441. The reversal of 40044002439 is 93420044004.

It is an interprime number because it is at equal distance from previous prime (40044002437) and next prime (40044002441).

It is not a de Polignac number, because 40044002439 - 2¹ = 40044002437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40044002437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8435049 + ... + 8439794.

It is an arithmetic number, because the mean of its divisors is an integer number (3847464432).

Almost surely, 2^40044002439 is an apocalyptic number.

40044002439 is a deficient number, since it is larger than the sum of its proper divisors (21515428473).

40044002439 is a wasteful number, since it uses less digits than its factorization.

40044002439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16874966.

The product of its (nonzero) digits is 13824, while the sum is 30.

The spelling of 40044002439 in words is "forty billion, forty-four million, two thousand, four hundred thirty-nine".