13900207 has 4 divisors (see below), whose sum is σ = 13914280. Its totient is φ = 13886136.

The previous prime is 13900199. The next prime is 13900231. The reversal of 13900207 is 70200931.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13900207 - 2³ = 13900199 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 (13900247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5433 + ... + 7570.

It is an arithmetic number, because the mean of its divisors is an integer number (3478570).

Almost surely, 2^13900207 is an apocalyptic number.

13900207 is a deficient number, since it is larger than the sum of its proper divisors (14073).

13900207 is a wasteful number, since it uses less digits than its factorization.

13900207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14072.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 13900207 is about 3728.2981372203. The cubic root of 13900207 is about 240.4402048200.

The spelling of 13900207 in words is "thirteen million, nine hundred thousand, two hundred seven".