4399857 has 36 divisors (see below), whose sum is σ = 8073936. Its totient is φ = 2283120.

The previous prime is 4399853. The next prime is 4399873. The reversal of 4399857 is 7589934.

It is not a de Polignac number, because 4399857 - 2² = 4399853 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4399853) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4398 + ... + 5304.

It is an arithmetic number, because the mean of its divisors is an integer number (224276).

Almost surely, 2^4399857 is an apocalyptic number.

It is an amenable number.

4399857 is a deficient number, since it is larger than the sum of its proper divisors (3674079).

4399857 is a wasteful number, since it uses less digits than its factorization.

4399857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938 (or 928 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 4399857 is about 2097.5836097758. The cubic root of 4399857 is about 163.8624789048.

It can be divided in two parts, 439 and 9857, that added together give a triangular number (10296 = T₁₄₃).

The spelling of 4399857 in words is "four million, three hundred ninety-nine thousand, eight hundred fifty-seven".