13970191 has 2 divisors, whose sum is σ = 13970192. Its totient is φ = 13970190.

The previous prime is 13970183. The next prime is 13970207. The reversal of 13970191 is 19107931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13970191 - 2³ = 13970183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13970161) 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 as a sum of consecutive naturals, namely, 6985095 + 6985096.

It is an arithmetic number, because the mean of its divisors is an integer number (6985096).

Almost surely, 2^13970191 is an apocalyptic number.

13970191 is a deficient number, since it is larger than the sum of its proper divisors (1).

13970191 is an equidigital number, since it uses as much as digits as its factorization.

13970191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1701, while the sum is 31.

The square root of 13970191 is about 3737.6718689580. The cubic root of 13970191 is about 240.8430478901.

It can be divided in two parts, 13970 and 191, that added together give a square (14161 = 119²).

The spelling of 13970191 in words is "thirteen million, nine hundred seventy thousand, one hundred ninety-one".