4398578 has 6 divisors (see below), whose sum is σ = 6602319. Its totient is φ = 2197806.

The previous prime is 4398577. The next prime is 4398623. The reversal of 4398578 is 8758934.

It can be written as a sum of positive squares in only one way, i.e., 2199289 + 2199289 = 1483^2 + 1483^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=1483.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4398571) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2225 + ... + 3707.

Almost surely, 2^4398578 is an apocalyptic number.

4398578 is a deficient number, since it is larger than the sum of its proper divisors (2203741).

4398578 is an frugal number, since it uses more digits than its factorization.

4398578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2968 (or 1485 counting only the distinct ones).

The product of its digits is 241920, while the sum is 44.

The square root of 4398578 is about 2097.2787129993. The cubic root of 4398578 is about 163.8465995689.

The spelling of 4398578 in words is "four million, three hundred ninety-eight thousand, five hundred seventy-eight".