4399560 has 144 divisors (see below), whose sum is σ = 15872220. Its totient is φ = 1056000.

The previous prime is 4399553. The next prime is 4399573. The reversal of 4399560 is 659934.

4399560 is a `hidden beast` number, since 4 + 3 + 99 + 560 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4186116 + 213444 = 2046^2 + 462^2 .

It is a super-2 number, since 2×4399560² = 38712256387200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 43510 + ... + 43610.

Almost surely, 2^4399560 is an apocalyptic number.

4399560 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4399560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7936110).

4399560 is an abundant number, since it is smaller than the sum of its proper divisors (11472660).

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

4399560 is a wasteful number, since it uses less digits than its factorization.

4399560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 4399560 is about 2097.5128128333. The cubic root of 4399560 is about 163.8587917962.

It can be divided in two parts, 439 and 9560, that added together give a palindrome (9999).

The spelling of 4399560 in words is "four million, three hundred ninety-nine thousand, five hundred sixty".