13599993 has 16 divisors (see below), whose sum is σ = 19869696. Its totient is φ = 8205840.

The previous prime is 13599893. The next prime is 13600003. The reversal of 13599993 is 39999531.

It is a happy number.

It is not a de Polignac number, because 13599993 - 2¹³ = 13591801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13599893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7896 + ... + 9462.

It is an arithmetic number, because the mean of its divisors is an integer number (1241856).

Almost surely, 2^13599993 is an apocalyptic number.

It is an amenable number.

13599993 is a deficient number, since it is larger than the sum of its proper divisors (6269703).

13599993 is a wasteful number, since it uses less digits than its factorization.

13599993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1844.

The product of its digits is 295245, while the sum is 48.

The square root of 13599993 is about 3687.8168338463. The cubic root of 13599993 is about 238.6965974326.

It can be divided in two parts, 135 and 99993, that added together give a triangular number (100128 = T₄₄₇).

The spelling of 13599993 in words is "thirteen million, five hundred ninety-nine thousand, nine hundred ninety-three".