13918404 has 48 divisors (see below), whose sum is σ = 34191360. Its totient is φ = 4398240.

The previous prime is 13918403. The next prime is 13918409. The reversal of 13918404 is 40481931.

It is a happy number.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13918403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58117 + ... + 58355.

It is an arithmetic number, because the mean of its divisors is an integer number (712320).

Almost surely, 2^13918404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13918404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17095680).

13918404 is an abundant number, since it is smaller than the sum of its proper divisors (20272956).

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

13918404 is a wasteful number, since it uses less digits than its factorization.

13918404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480 (or 478 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 13918404 is about 3730.7377286537. The cubic root of 13918404 is about 240.5450805373.

The spelling of 13918404 in words is "thirteen million, nine hundred eighteen thousand, four hundred four".