13991101 has 4 divisors (see below), whose sum is σ = 14288832. Its totient is φ = 13693372.

The previous prime is 13991077. The next prime is 13991123. The reversal of 13991101 is 10119931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13991101 - 2¹³ = 13982909 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 (13991171) 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, 148795 + ... + 148888.

It is an arithmetic number, because the mean of its divisors is an integer number (3572208).

Almost surely, 2^13991101 is an apocalyptic number.

It is an amenable number.

13991101 is a deficient number, since it is larger than the sum of its proper divisors (297731).

13991101 is an equidigital number, since it uses as much as digits as its factorization.

13991101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297730.

The product of its (nonzero) digits is 243, while the sum is 25.

The square root of 13991101 is about 3740.4680188447. The cubic root of 13991101 is about 240.9631492699.

It can be divided in two parts, 1399 and 1101, that added together give a square (2500 = 50²).

The spelling of 13991101 in words is "thirteen million, nine hundred ninety-one thousand, one hundred one".