40404371 has 8 divisors (see below), whose sum is σ = 47119200. Its totient is φ = 34632024.

The previous prime is 40404367. The next prime is 40404383. The reversal of 40404371 is 17340404.

It is not a de Polignac number, because 40404371 - 2² = 40404367 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40404361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58556 + ... + 59241.

It is an arithmetic number, because the mean of its divisors is an integer number (5889900).

Almost surely, 2^40404371 is an apocalyptic number.

40404371 is a deficient number, since it is larger than the sum of its proper divisors (6714829).

40404371 is an equidigital number, since it uses as much as digits as its factorization.

40404371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117818 (or 117804 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 40404371 is about 6356.4432664817. The cubic root of 40404371 is about 343.1437686910.

Adding to 40404371 its reverse (17340404), we get a palindrome (57744775).

The spelling of 40404371 in words is "forty million, four hundred four thousand, three hundred seventy-one".