40407871 has 4 divisors (see below), whose sum is σ = 46180432. Its totient is φ = 34635312.

The previous prime is 40407859. The next prime is 40407877. The reversal of 40407871 is 17870404.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40407871 - 2⁵ = 40407839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40407877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2886270 + ... + 2886283.

It is an arithmetic number, because the mean of its divisors is an integer number (11545108).

Almost surely, 2^40407871 is an apocalyptic number.

40407871 is a deficient number, since it is larger than the sum of its proper divisors (5772561).

40407871 is an equidigital number, since it uses as much as digits as its factorization.

40407871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5772560.

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 40407871 is about 6356.7185717161. The cubic root of 40407871 is about 343.1536766002.

It can be divided in two parts, 4040 and 7871, that added together give a palindrome (11911).

The spelling of 40407871 in words is "forty million, four hundred seven thousand, eight hundred seventy-one".