14269978 has 4 divisors (see below), whose sum is σ = 21404970. Its totient is φ = 7134988.

The previous prime is 14269949. The next prime is 14269991. The reversal of 14269978 is 87996241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87996241 = 397 ⋅221653.

It can be written as a sum of positive squares in only one way, i.e., 9591409 + 4678569 = 3097^2 + 2163^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3567493 + ... + 3567496.

Almost surely, 2^14269978 is an apocalyptic number.

14269978 is a deficient number, since it is larger than the sum of its proper divisors (7134992).

14269978 is an equidigital number, since it uses as much as digits as its factorization.

14269978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7134991.

The product of its digits is 217728, while the sum is 46.

The square root of 14269978 is about 3777.5624415753. The cubic root of 14269978 is about 242.5536240218.

The spelling of 14269978 in words is "fourteen million, two hundred sixty-nine thousand, nine hundred seventy-eight".