13970291 has 2 divisors, whose sum is σ = 13970292. Its totient is φ = 13970290.

The previous prime is 13970287. The next prime is 13970293. The reversal of 13970291 is 19207931.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (19207931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13970291 - 2² = 13970287 is a prime.

Together with 13970293, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13970293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6985145 + 6985146.

It is an arithmetic number, because the mean of its divisors is an integer number (6985146).

Almost surely, 2^13970291 is an apocalyptic number.

13970291 is a deficient number, since it is larger than the sum of its proper divisors (1).

13970291 is an equidigital number, since it uses as much as digits as its factorization.

13970291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 13970291 is about 3737.6852462453. The cubic root of 13970291 is about 240.8436225481.

The spelling of 13970291 in words is "thirteen million, nine hundred seventy thousand, two hundred ninety-one".