13970381 has 8 divisors (see below), whose sum is σ = 14429184. Its totient is φ = 13517280.

The previous prime is 13970353. The next prime is 13970387. The reversal of 13970381 is 18307931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13970381 - 2¹⁴ = 13953997 is a prime.

It is a super-2 number, since 2×13970381² = 390343090570322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13970387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3866 + ... + 6548.

It is an arithmetic number, because the mean of its divisors is an integer number (1803648).

Almost surely, 2^13970381 is an apocalyptic number.

It is an amenable number.

13970381 is a deficient number, since it is larger than the sum of its proper divisors (458803).

13970381 is a wasteful number, since it uses less digits than its factorization.

13970381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2851.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 13970381 is about 3737.6972857630. The cubic root of 13970381 is about 240.8441397380.

The spelling of 13970381 in words is "thirteen million, nine hundred seventy thousand, three hundred eighty-one".