40040307 has 12 divisors (see below), whose sum is σ = 58349304. Its totient is φ = 26456640.

The previous prime is 40040293. The next prime is 40040393. The reversal of 40040307 is 70304004.

It is not a de Polignac number, because 40040307 - 2¹⁶ = 39974771 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40040307.

It is not an unprimeable number, because it can be changed into a prime (40040807) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18669 + ... + 20702.

It is an arithmetic number, because the mean of its divisors is an integer number (4862442).

Almost surely, 2^40040307 is an apocalyptic number.

40040307 is a deficient number, since it is larger than the sum of its proper divisors (18308997).

40040307 is a wasteful number, since it uses less digits than its factorization.

40040307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39490 (or 39487 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 40040307 is about 6327.7410661309. The cubic root of 40040307 is about 342.1100241061.

The spelling of 40040307 in words is "forty million, forty thousand, three hundred seven".