14109978 has 16 divisors (see below), whose sum is σ = 28753056. Its totient is φ = 4614480.

The previous prime is 14109967. The next prime is 14110007. The reversal of 14109978 is 87990141.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 21868 + ... + 22503.

It is an arithmetic number, because the mean of its divisors is an integer number (1797066).

Almost surely, 2^14109978 is an apocalyptic number.

14109978 is an abundant number, since it is smaller than the sum of its proper divisors (14643078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

14109978 is a wasteful number, since it uses less digits than its factorization.

14109978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44429.

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 14109978 is about 3756.3250658057. The cubic root of 14109978 is about 241.6436825281.

The spelling of 14109978 in words is "fourteen million, one hundred nine thousand, nine hundred seventy-eight".