13996985 has 4 divisors (see below), whose sum is σ = 16796388. Its totient is φ = 11197584.

The previous prime is 13996943. The next prime is 13996993. The reversal of 13996985 is 58969931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58969931 = 41 ⋅1438291.

It can be written as a sum of positive squares in 2 ways, for example, as 7376656 + 6620329 = 2716^2 + 2573^2 .

It is a cyclic number.

It is not a de Polignac number, because 13996985 - 2⁶ = 13996921 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1399694 + ... + 1399703.

It is an arithmetic number, because the mean of its divisors is an integer number (4199097).

Almost surely, 2^13996985 is an apocalyptic number.

It is an amenable number.

13996985 is a deficient number, since it is larger than the sum of its proper divisors (2799403).

13996985 is an equidigital number, since it uses as much as digits as its factorization.

13996985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2799402.

The product of its digits is 524880, while the sum is 50.

The square root of 13996985 is about 3741.2544687578. The cubic root of 13996985 is about 240.9969237970.

The spelling of 13996985 in words is "thirteen million, nine hundred ninety-six thousand, nine hundred eighty-five".