13910391 has 24 divisors (see below), whose sum is σ = 22239360. Its totient is φ = 8307600.

The previous prime is 13910389. The next prime is 13910417. The reversal of 13910391 is 19301931.

13910391 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13910391 - 2¹ = 13910389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13910311) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6040 + ... + 8018.

It is an arithmetic number, because the mean of its divisors is an integer number (926640).

Almost surely, 2^13910391 is an apocalyptic number.

13910391 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13910391 is a deficient number, since it is larger than the sum of its proper divisors (8328969).

13910391 is a wasteful number, since it uses less digits than its factorization.

13910391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2067 (or 2064 counting only the distinct ones).

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

The square root of 13910391 is about 3729.6636577579. The cubic root of 13910391 is about 240.4989100678.

The spelling of 13910391 in words is "thirteen million, nine hundred ten thousand, three hundred ninety-one".