13998619 has 4 divisors (see below), whose sum is σ = 14481360. Its totient is φ = 13515880.

The previous prime is 13998613. The next prime is 13998631. The reversal of 13998619 is 91689931.

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

It is a cyclic number.

It is not a de Polignac number, because 13998619 - 2⁵ = 13998587 is a prime.

It is a super-2 number, since 2×13998619² = 391922667814322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13998613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241327 + ... + 241384.

It is an arithmetic number, because the mean of its divisors is an integer number (3620340).

Almost surely, 2^13998619 is an apocalyptic number.

13998619 is a deficient number, since it is larger than the sum of its proper divisors (482741).

13998619 is an equidigital number, since it uses as much as digits as its factorization.

13998619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482740.

The product of its digits is 104976, while the sum is 46.

The square root of 13998619 is about 3741.4728383352. The cubic root of 13998619 is about 241.0063013796.

The spelling of 13998619 in words is "thirteen million, nine hundred ninety-eight thousand, six hundred nineteen".