40039005 has 8 divisors (see below), whose sum is σ = 64062432. Its totient is φ = 21354128.

The previous prime is 40039003. The next prime is 40039031. The reversal of 40039005 is 50093004.

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

It is a cyclic number.

It is not a de Polignac number, because 40039005 - 2¹ = 40039003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40039003) 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, 1334619 + ... + 1334648.

It is an arithmetic number, because the mean of its divisors is an integer number (8007804).

Almost surely, 2^40039005 is an apocalyptic number.

It is an amenable number.

40039005 is a deficient number, since it is larger than the sum of its proper divisors (24023427).

40039005 is a wasteful number, since it uses less digits than its factorization.

40039005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2669275.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 40039005 is about 6327.6381849787. The cubic root of 40039005 is about 342.1063159087.

The spelling of 40039005 in words is "forty million, thirty-nine thousand, five".