13998823 has 2 divisors, whose sum is σ = 13998824. Its totient is φ = 13998822.

The previous prime is 13998811. The next prime is 13998827. The reversal of 13998823 is 32889931.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13998823 - 2⁹ = 13998311 is a prime.

It is the 3742-nd Hogben number.

It is a self number, because there is not a number n which added to its sum of digits gives 13998823.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13998827) by changing a digit.

It is a nontrivial repunit in base 3741.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6999411 + 6999412.

It is an arithmetic number, because the mean of its divisors is an integer number (6999412).

Almost surely, 2^13998823 is an apocalyptic number.

13998823 is a deficient number, since it is larger than the sum of its proper divisors (1).

13998823 is an equidigital number, since it uses as much as digits as its factorization.

13998823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 43.

The square root of 13998823 is about 3741.5001002272. The cubic root of 13998823 is about 241.0074720915.

The spelling of 13998823 in words is "thirteen million, nine hundred ninety-eight thousand, eight hundred twenty-three".