14378399 has 4 divisors (see below), whose sum is σ = 16432464. Its totient is φ = 12324336.

The previous prime is 14378387. The next prime is 14378411. The reversal of 14378399 is 99387341.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99387341 = 1553 ⋅63997.

It is an interprime number because it is at equal distance from previous prime (14378387) and next prime (14378411).

It is a cyclic number.

It is not a de Polignac number, because 14378399 - 2¹² = 14374303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14378599) 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, 1027022 + ... + 1027035.

It is an arithmetic number, because the mean of its divisors is an integer number (4108116).

Almost surely, 2^14378399 is an apocalyptic number.

14378399 is a deficient number, since it is larger than the sum of its proper divisors (2054065).

14378399 is an equidigital number, since it uses as much as digits as its factorization.

14378399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2054064.

The product of its digits is 163296, while the sum is 44.

The square root of 14378399 is about 3791.8859423775. The cubic root of 14378399 is about 243.1663692730.

The spelling of 14378399 in words is "fourteen million, three hundred seventy-eight thousand, three hundred ninety-nine".