4394399 has 4 divisors (see below), whose sum is σ = 4545960. Its totient is φ = 4242840.

The previous prime is 4394371. The next prime is 4394413. The reversal of 4394399 is 9934934.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4394399 is a prime.

It is a d-powerful number, because it can be written as 4⁷ + 3 + 9⁴ + 4¹¹ + 3¹⁰ + 9⁵ + 9⁵ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4394309) 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, 75737 + ... + 75794.

It is an arithmetic number, because the mean of its divisors is an integer number (1136490).

Almost surely, 2^4394399 is an apocalyptic number.

4394399 is a deficient number, since it is larger than the sum of its proper divisors (151561).

4394399 is a wasteful number, since it uses less digits than its factorization.

4394399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151560.

The product of its digits is 104976, while the sum is 41.

The square root of 4394399 is about 2096.2821852031. The cubic root of 4394399 is about 163.7946940138.

The spelling of 4394399 in words is "four million, three hundred ninety-four thousand, three hundred ninety-nine".