13955819 has 4 divisors (see below), whose sum is σ = 13963944. Its totient is φ = 13947696.

The previous prime is 13955813. The next prime is 13955857. The reversal of 13955819 is 91855931.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 91855931 = 5039 ⋅18229.

It is a cyclic number.

It is not a de Polignac number, because 13955819 - 2⁴ = 13955803 is a prime.

It is a super-2 number, since 2×13955819² = 389529767921522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13955813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 362 + ... + 5295.

It is an arithmetic number, because the mean of its divisors is an integer number (3490986).

Almost surely, 2^13955819 is an apocalyptic number.

13955819 is a deficient number, since it is larger than the sum of its proper divisors (8125).

13955819 is an equidigital number, since it uses as much as digits as its factorization.

13955819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8124.

The product of its digits is 48600, while the sum is 41.

The square root of 13955819 is about 3735.7487870573. The cubic root of 13955819 is about 240.7604295029.

The spelling of 13955819 in words is "thirteen million, nine hundred fifty-five thousand, eight hundred nineteen".