4399930 has 16 divisors (see below), whose sum is σ = 8050824. Its totient is φ = 1730880.

The previous prime is 4399907. The next prime is 4399931. The reversal of 4399930 is 399934.

It can be written as a sum of positive squares in 4 ways, for example, as 3052009 + 1347921 = 1747^2 + 1161^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 4399930.

It is not an unprimeable number, because it can be changed into a prime (4399931) 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, 2997 + ... + 4216.

Almost surely, 2^4399930 is an apocalyptic number.

4399930 is a deficient number, since it is larger than the sum of its proper divisors (3650894).

4399930 is a wasteful number, since it uses less digits than its factorization.

4399930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7281.

The product of its (nonzero) digits is 26244, while the sum is 37.

The square root of 4399930 is about 2097.6010106786. The cubic root of 4399930 is about 163.8633851384.

It can be divided in two parts, 4399 and 930, that added together give a square (5329 = 73²).

The spelling of 4399930 in words is "four million, three hundred ninety-nine thousand, nine hundred thirty".