13938699 has 4 divisors (see below), whose sum is σ = 18584936. Its totient is φ = 9292464.

The previous prime is 13938697. The next prime is 13938731. The reversal of 13938699 is 99683931.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99683931 = 3 ⋅33227977.

It is not a de Polignac number, because 13938699 - 2¹ = 13938697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13938697) 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, 2323114 + ... + 2323119.

It is an arithmetic number, because the mean of its divisors is an integer number (4646234).

Almost surely, 2^13938699 is an apocalyptic number.

13938699 is a deficient number, since it is larger than the sum of its proper divisors (4646237).

13938699 is an equidigital number, since it uses as much as digits as its factorization.

13938699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4646236.

The product of its digits is 314928, while the sum is 48.

The square root of 13938699 is about 3733.4567092709. The cubic root of 13938699 is about 240.6619399970.

The spelling of 13938699 in words is "thirteen million, nine hundred thirty-eight thousand, six hundred ninety-nine".