13988206 has 4 divisors (see below), whose sum is σ = 20982312. Its totient is φ = 6994102.

The previous prime is 13988203. The next prime is 13988213. The reversal of 13988206 is 60288931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60288931 = 53 ⋅1137527.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13988203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3497050 + ... + 3497053.

It is an arithmetic number, because the mean of its divisors is an integer number (5245578).

Almost surely, 2^13988206 is an apocalyptic number.

13988206 is a deficient number, since it is larger than the sum of its proper divisors (6994106).

13988206 is an equidigital number, since it uses as much as digits as its factorization.

13988206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6994105.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 13988206 is about 3740.0810151653. The cubic root of 13988206 is about 240.9465283135.

It can be divided in two parts, 1398 and 8206, that added together give a square (9604 = 98²).

The spelling of 13988206 in words is "thirteen million, nine hundred eighty-eight thousand, two hundred six".