14743978 has 4 divisors (see below), whose sum is σ = 22115970. Its totient is φ = 7371988.

The previous prime is 14743957. The next prime is 14743979. The reversal of 14743978 is 87934741.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87934741 = 101 ⋅870641.

It can be written as a sum of positive squares in only one way, i.e., 8277129 + 6466849 = 2877^2 + 2543^2 .

It is not an unprimeable number, because it can be changed into a prime (14743979) 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 as a sum of consecutive naturals, namely, 3685993 + ... + 3685996.

Almost surely, 2^14743978 is an apocalyptic number.

14743978 is a deficient number, since it is larger than the sum of its proper divisors (7371992).

14743978 is an equidigital number, since it uses as much as digits as its factorization.

14743978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7371991.

The product of its digits is 169344, while the sum is 43.

The square root of 14743978 is about 3839.7887962751. The cubic root of 14743978 is about 245.2100267609.

The spelling of 14743978 in words is "fourteen million, seven hundred forty-three thousand, nine hundred seventy-eight".