13988823 has 8 divisors (see below), whose sum is σ = 18766848. Its totient is φ = 9268344.

The previous prime is 13988813. The next prime is 13988827. The reversal of 13988823 is 32888931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-13988823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13988827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13815 + ... + 14792.

It is an arithmetic number, because the mean of its divisors is an integer number (2345856).

Almost surely, 2^13988823 is an apocalyptic number.

13988823 is a deficient number, since it is larger than the sum of its proper divisors (4778025).

13988823 is a wasteful number, since it uses less digits than its factorization.

13988823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28773.

The product of its digits is 82944, while the sum is 42.

The square root of 13988823 is about 3740.1634991000. The cubic root of 13988823 is about 240.9500708651.

The spelling of 13988823 in words is "thirteen million, nine hundred eighty-eight thousand, eight hundred twenty-three".