13984385 has 4 divisors (see below), whose sum is σ = 16781268. Its totient is φ = 11187504.

The previous prime is 13984363. The next prime is 13984429. The reversal of 13984385 is 58348931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58348931 = 487 ⋅119813.

It can be written as a sum of positive squares in 2 ways, for example, as 1481089 + 12503296 = 1217^2 + 3536^2 .

It is a cyclic number.

It is not a de Polignac number, because 13984385 - 2¹⁴ = 13968001 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, 1398434 + ... + 1398443.

It is an arithmetic number, because the mean of its divisors is an integer number (4195317).

Almost surely, 2^13984385 is an apocalyptic number.

It is an amenable number.

13984385 is a deficient number, since it is larger than the sum of its proper divisors (2796883).

13984385 is an equidigital number, since it uses as much as digits as its factorization.

13984385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2796882.

The product of its digits is 103680, while the sum is 41.

The square root of 13984385 is about 3739.5701624652. The cubic root of 13984385 is about 240.9245874364.

The spelling of 13984385 in words is "thirteen million, nine hundred eighty-four thousand, three hundred eighty-five".