4399938 has 24 divisors (see below), whose sum is σ = 9863100. Its totient is φ = 1415904.

The previous prime is 4399933. The next prime is 4399939. The reversal of 4399938 is 8399934.

It can be written as a sum of positive squares in 2 ways, for example, as 4272489 + 127449 = 2067^2 + 357^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4399893 and 4399902.

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 11 ways as a sum of consecutive naturals, for example, 3693 + ... + 4736.

Almost surely, 2^4399938 is an apocalyptic number.

4399938 is an abundant number, since it is smaller than the sum of its proper divisors (5463162).

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

4399938 is a wasteful number, since it uses less digits than its factorization.

4399938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8466 (or 8463 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 4399938 is about 2097.6029176181. The cubic root of 4399938 is about 163.8634844511.

The spelling of 4399938 in words is "four million, three hundred ninety-nine thousand, nine hundred thirty-eight".