40108404 has 36 divisors (see below), whose sum is σ = 107110752. Its totient is φ = 11442960.

The previous prime is 40108399. The next prime is 40108417. The reversal of 40108404 is 40480104.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57699 + ... + 58389.

Almost surely, 2^40108404 is an apocalyptic number.

It is an amenable number.

40108404 is an abundant number, since it is smaller than the sum of its proper divisors (67002348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40108404 is an equidigital number, since it uses as much as digits as its factorization.

40108404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1396 (or 703 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 40108404 is about 6333.1196104290. The cubic root of 40108404 is about 342.3038577165.

Multiplying 40108404 by its sum of digits (21), we get a square (842276484 = 29022²).

40108404 divided by its sum of digits (21) gives a square (1909924 = 1382²).

Adding to 40108404 its reverse (40480104), we get a palindrome (80588508).

The spelling of 40108404 in words is "forty million, one hundred eight thousand, four hundred four".