4390426 has 16 divisors (see below), whose sum is σ = 6933600. Its totient is φ = 2081968.

The previous prime is 4390417. The next prime is 4390433. The reversal of 4390426 is 6240934.

It is a super-2 number, since 2×4390426² = 38551680922952, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4390394 and 4390403.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2781 + ... + 4063.

It is an arithmetic number, because the mean of its divisors is an integer number (433350).

Almost surely, 2^4390426 is an apocalyptic number.

4390426 is the 1711-st pentagonal number.

4390426 is a deficient number, since it is larger than the sum of its proper divisors (2543174).

4390426 is a wasteful number, since it uses less digits than its factorization.

4390426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1373.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 4390426 is about 2095.3343408631. The cubic root of 4390426 is about 163.7453165725.

The spelling of 4390426 in words is "four million, three hundred ninety thousand, four hundred twenty-six".