14478993 has 10 divisors (see below), whose sum is σ = 21629234. Its totient is φ = 9652608.

The previous prime is 14478991. The next prime is 14479043. The reversal of 14478993 is 39987441.

It can be written as a sum of positive squares in only one way, i.e., 8661249 + 5817744 = 2943^2 + 2412^2 .

It is not a de Polignac number, because 14478993 - 2¹ = 14478991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14478991) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 89296 + ... + 89457.

Almost surely, 2^14478993 is an apocalyptic number.

It is an amenable number.

14478993 is a deficient number, since it is larger than the sum of its proper divisors (7150241).

14478993 is an equidigital number, since it uses as much as digits as its factorization.

14478993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178765 (or 178756 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 14478993 is about 3805.1271989252. The cubic root of 14478993 is about 243.7321312345.

It can be divided in two parts, 1447 and 8993, that added together give a triangular number (10440 = T₁₄₄).

The spelling of 14478993 in words is "fourteen million, four hundred seventy-eight thousand, nine hundred ninety-three".