13970385 has 72 divisors (see below), whose sum is σ = 28776384. Its totient is φ = 6215040.

The previous prime is 13970353. The next prime is 13970387. The reversal of 13970385 is 58307931.

It is not a de Polignac number, because 13970385 - 2⁵ = 13970353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13970387) 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 71 ways as a sum of consecutive naturals, for example, 83572 + ... + 83738.

It is an arithmetic number, because the mean of its divisors is an integer number (399672).

Almost surely, 2^13970385 is an apocalyptic number.

13970385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13970385 is an abundant number, since it is smaller than the sum of its proper divisors (14805999).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13970385 is a wasteful number, since it uses less digits than its factorization.

13970385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215 (or 199 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 13970385 is about 3737.6978208518. The cubic root of 13970385 is about 240.8441627241.

The spelling of 13970385 in words is "thirteen million, nine hundred seventy thousand, three hundred eighty-five".