13913784 has 24 divisors (see below), whose sum is σ = 37683360. Its totient is φ = 4637904.

The previous prime is 13913773. The next prime is 13913791. The reversal of 13913784 is 48731931.

It is a happy number.

13913784 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 96552 + ... + 96695.

It is an arithmetic number, because the mean of its divisors is an integer number (1570140).

Almost surely, 2^13913784 is an apocalyptic number.

It is an amenable number.

13913784 is an abundant number, since it is smaller than the sum of its proper divisors (23769576).

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

13913784 is a wasteful number, since it uses less digits than its factorization.

13913784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193259 (or 193252 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 13913784 is about 3730.1184967773. The cubic root of 13913784 is about 240.5184625128.

The spelling of 13913784 in words is "thirteen million, nine hundred thirteen thousand, seven hundred eighty-four".