14013991 has 2 divisors, whose sum is σ = 14013992. Its totient is φ = 14013990.

The previous prime is 14013947. The next prime is 14014019. The reversal of 14013991 is 19931041.

It is a happy number.

It is an a-pointer prime, because the next prime (14014019) can be obtained adding 14013991 to its sum of digits (28).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 14013991 - 2⁷ = 14013863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14013911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7006995 + 7006996.

It is an arithmetic number, because the mean of its divisors is an integer number (7006996).

Almost surely, 2^14013991 is an apocalyptic number.

14013991 is a deficient number, since it is larger than the sum of its proper divisors (1).

14013991 is an equidigital number, since it uses as much as digits as its factorization.

14013991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 14013991 is about 3743.5265459190. The cubic root of 14013991 is about 241.0944861170.

The spelling of 14013991 in words is "fourteen million, thirteen thousand, nine hundred ninety-one".