13598993 has 2 divisors, whose sum is σ = 13598994. Its totient is φ = 13598992.

The previous prime is 13598989. The next prime is 13599013. The reversal of 13598993 is 39989531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10387729 + 3211264 = 3223^2 + 1792^2 .

It is an emirp because it is prime and its reverse (39989531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13598993 - 2² = 13598989 is a prime.

It is a super-2 number, since 2×13598993² = 369865221228098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13598393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6799496 + 6799497.

It is an arithmetic number, because the mean of its divisors is an integer number (6799497).

Almost surely, 2^13598993 is an apocalyptic number.

It is an amenable number.

13598993 is a deficient number, since it is larger than the sum of its proper divisors (1).

13598993 is an equidigital number, since it uses as much as digits as its factorization.

13598993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 262440, while the sum is 47.

The square root of 13598993 is about 3687.6812497828. The cubic root of 13598993 is about 238.6907468794.

The spelling of 13598993 in words is "thirteen million, five hundred ninety-eight thousand, nine hundred ninety-three".