40404271 has 2 divisors, whose sum is σ = 40404272. Its totient is φ = 40404270.

The previous prime is 40404269. The next prime is 40404289. The reversal of 40404271 is 17240404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40404271 - 2¹ = 40404269 is a prime.

Together with 40404269, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40404571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20202135 + 20202136.

It is an arithmetic number, because the mean of its divisors is an integer number (20202136).

Almost surely, 2^40404271 is an apocalyptic number.

40404271 is a deficient number, since it is larger than the sum of its proper divisors (1).

40404271 is an equidigital number, since it uses as much as digits as its factorization.

40404271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 40404271 is about 6356.4354004426. The cubic root of 40404271 is about 343.1434855995.

Adding to 40404271 its reverse (17240404), we get a palindrome (57644675).

The spelling of 40404271 in words is "forty million, four hundred four thousand, two hundred seventy-one".