13951911 has 4 divisors (see below), whose sum is σ = 18602552. Its totient is φ = 9301272.

The previous prime is 13951867. The next prime is 13951919. The reversal of 13951911 is 11915931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11915931 = 3 ⋅3971977.

It is not a de Polignac number, because 13951911 - 2¹¹ = 13949863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13951919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2325316 + ... + 2325321.

It is an arithmetic number, because the mean of its divisors is an integer number (4650638).

Almost surely, 2^13951911 is an apocalyptic number.

13951911 is a deficient number, since it is larger than the sum of its proper divisors (4650641).

13951911 is an equidigital number, since it uses as much as digits as its factorization.

13951911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4650640.

The product of its digits is 1215, while the sum is 30.

The square root of 13951911 is about 3735.2256959921. The cubic root of 13951911 is about 240.7379542998.

The spelling of 13951911 in words is "thirteen million, nine hundred fifty-one thousand, nine hundred eleven".