13999147 has 2 divisors, whose sum is σ = 13999148. Its totient is φ = 13999146.

The previous prime is 13999133. The next prime is 13999159. The reversal of 13999147 is 74199931.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13999147 - 2¹¹ = 13997099 is a prime.

It is a super-2 number, since 2×13999147² = 391952233455218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13999747) 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, 6999573 + 6999574.

It is an arithmetic number, because the mean of its divisors is an integer number (6999574).

Almost surely, 2^13999147 is an apocalyptic number.

13999147 is a deficient number, since it is larger than the sum of its proper divisors (1).

13999147 is an equidigital number, since it uses as much as digits as its factorization.

13999147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61236, while the sum is 43.

The square root of 13999147 is about 3741.5433981179. The cubic root of 13999147 is about 241.0093314339.

The spelling of 13999147 in words is "thirteen million, nine hundred ninety-nine thousand, one hundred forty-seven".