13599998 has 4 divisors (see below), whose sum is σ = 20400000. Its totient is φ = 6799998.

The previous prime is 13599893. The next prime is 13600003. The reversal of 13599998 is 89999531.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3399998 + ... + 3400001.

It is an arithmetic number, because the mean of its divisors is an integer number (5100000).

Almost surely, 2^13599998 is an apocalyptic number.

13599998 is a deficient number, since it is larger than the sum of its proper divisors (6800002).

13599998 is an equidigital number, since it uses as much as digits as its factorization.

13599998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6800001.

The product of its digits is 787320, while the sum is 53.

The square root of 13599998 is about 3687.8175117541. The cubic root of 13599998 is about 238.6966266847.

The spelling of 13599998 in words is "thirteen million, five hundred ninety-nine thousand, nine hundred ninety-eight".