14899991 has 2 divisors, whose sum is σ = 14899992. Its totient is φ = 14899990.

The previous prime is 14899979. The next prime is 14900003. The reversal of 14899991 is 19999841.

It is a balanced prime because it is at equal distance from previous prime (14899979) and next prime (14900003).

It is a cyclic number.

It is not a de Polignac number, because 14899991 - 2¹⁰ = 14898967 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14899901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7449995 + 7449996.

It is an arithmetic number, because the mean of its divisors is an integer number (7449996).

Almost surely, 2^14899991 is an apocalyptic number.

14899991 is a deficient number, since it is larger than the sum of its proper divisors (1).

14899991 is an equidigital number, since it uses as much as digits as its factorization.

14899991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 50.

The square root of 14899991 is about 3860.0506473361. The cubic root of 14899991 is about 246.0718883474.

The spelling of 14899991 in words is "fourteen million, eight hundred ninety-nine thousand, nine hundred ninety-one".