13911390 has 24 divisors (see below), whose sum is σ = 36169848. Its totient is φ = 3709680.

The previous prime is 13911383. The next prime is 13911397. The reversal of 13911390 is 9311931.

13911390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13911383) and next prime (13911397).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13911397) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77196 + ... + 77375.

It is an arithmetic number, because the mean of its divisors is an integer number (1507077).

Almost surely, 2^13911390 is an apocalyptic number.

13911390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13911390 is an abundant number, since it is smaller than the sum of its proper divisors (22258458).

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

13911390 is a wasteful number, since it uses less digits than its factorization.

13911390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154584 (or 154581 counting only the distinct ones).

The product of its (nonzero) digits is 729, while the sum is 27.

The square root of 13911390 is about 3729.7975816390. The cubic root of 13911390 is about 240.5046672187.

The spelling of 13911390 in words is "thirteen million, nine hundred eleven thousand, three hundred ninety".