4399872 has 72 divisors (see below), whose sum is σ = 12435696. Its totient is φ = 1376256.

The previous prime is 4399853. The next prime is 4399873. The reversal of 4399872 is 2789934.

It is an Ulam number.

It is a d-powerful number, because it can be written as 4⁴ + 3¹³ + 9⁵ + 9⁶ + 8⁷ + 7⁶ + 2 .

It is not an unprimeable number, because it can be changed into a prime (4399873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12888 + ... + 13224.

It is an arithmetic number, because the mean of its divisors is an integer number (172718).

Almost surely, 2^4399872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4399872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6217848).

4399872 is an abundant number, since it is smaller than the sum of its proper divisors (8035824).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4399872 is a wasteful number, since it uses less digits than its factorization.

4399872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373 (or 359 counting only the distinct ones).

The product of its digits is 108864, while the sum is 42.

The square root of 4399872 is about 2097.5871853155. The cubic root of 4399872 is about 163.8626651180.

The spelling of 4399872 in words is "four million, three hundred ninety-nine thousand, eight hundred seventy-two".