40807439 has 8 divisors (see below), whose sum is σ = 42319872. Its totient is φ = 39307320.

The previous prime is 40807433. The next prime is 40807441. The reversal of 40807439 is 93470804.

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 40807439 - 2⁸ = 40807183 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40807399 and 40807408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40807433) 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, 3962 + ... + 9864.

It is an arithmetic number, because the mean of its divisors is an integer number (5289984).

Almost surely, 2^40807439 is an apocalyptic number.

40807439 is a deficient number, since it is larger than the sum of its proper divisors (1512433).

40807439 is a wasteful number, since it uses less digits than its factorization.

40807439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6157.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 40807439 is about 6388.0700528407. The cubic root of 40807439 is about 344.2810456766.

The spelling of 40807439 in words is "forty million, eight hundred seven thousand, four hundred thirty-nine".