13990667 has 2 divisors, whose sum is σ = 13990668. Its totient is φ = 13990666.

The previous prime is 13990657. The next prime is 13990687. The reversal of 13990667 is 76609931.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (76609931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13990667 - 2¹² = 13986571 is a prime.

It is not a weakly prime, because it can be changed into another prime (13990637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6995333 + 6995334.

It is an arithmetic number, because the mean of its divisors is an integer number (6995334).

Almost surely, 2^13990667 is an apocalyptic number.

13990667 is a deficient number, since it is larger than the sum of its proper divisors (1).

13990667 is an equidigital number, since it uses as much as digits as its factorization.

13990667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61236, while the sum is 41.

The square root of 13990667 is about 3740.4100042642. The cubic root of 13990667 is about 240.9606577079.

The spelling of 13990667 in words is "thirteen million, nine hundred ninety thousand, six hundred sixty-seven".