13078999 has 2 divisors, whose sum is σ = 13079000. Its totient is φ = 13078998.

The previous prime is 13078907. The next prime is 13079021. The reversal of 13078999 is 99987031.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13078999 - 2⁹ = 13078487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13078699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6539499 + 6539500.

It is an arithmetic number, because the mean of its divisors is an integer number (6539500).

Almost surely, 2^13078999 is an apocalyptic number.

13078999 is a deficient number, since it is larger than the sum of its proper divisors (1).

13078999 is an equidigital number, since it uses as much as digits as its factorization.

13078999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 46.

The square root of 13078999 is about 3616.4898727910. The cubic root of 13078999 is about 235.6087972076.

The spelling of 13078999 in words is "thirteen million, seventy-eight thousand, nine hundred ninety-nine".