40140404 has 12 divisors (see below), whose sum is σ = 70408800. Its totient is φ = 20023608.

The previous prime is 40140403. The next prime is 40140413. The reversal of 40140404 is 40404104.

It is a super-2 number, since 2×40140404² = 3222504066566432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40140403) 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, 9674 + ... + 13185.

It is an arithmetic number, because the mean of its divisors is an integer number (5867400).

Almost surely, 2^40140404 is an apocalyptic number.

It is an amenable number.

40140404 is a deficient number, since it is larger than the sum of its proper divisors (30268396).

40140404 is a wasteful number, since it uses less digits than its factorization.

40140404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23302 (or 23300 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 40140404 is about 6335.6455077600. The cubic root of 40140404 is about 342.3948678337.

Adding to 40140404 its reverse (40404104), we get a palindrome (80544508).

The spelling of 40140404 in words is "forty million, one hundred forty thousand, four hundred four".