4399378 has 4 divisors (see below), whose sum is σ = 6599070. Its totient is φ = 2199688.

The previous prime is 4399363. The next prime is 4399397. The reversal of 4399378 is 8739934.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2259009 + 2140369 = 1503^2 + 1463^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1099843 + ... + 1099846.

Almost surely, 2^4399378 is an apocalyptic number.

4399378 is a deficient number, since it is larger than the sum of its proper divisors (2199692).

4399378 is a wasteful number, since it uses less digits than its factorization.

4399378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2199691.

The product of its digits is 163296, while the sum is 43.

The square root of 4399378 is about 2097.4694276675. The cubic root of 4399378 is about 163.8565322740.

The spelling of 4399378 in words is "four million, three hundred ninety-nine thousand, three hundred seventy-eight".