4392445 has 4 divisors (see below), whose sum is σ = 5270940. Its totient is φ = 3513952.

The previous prime is 4392433. The next prime is 4392461. The reversal of 4392445 is 5442934.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1301881 + 3090564 = 1141^2 + 1758^2 .

It is a cyclic number.

It is not a de Polignac number, because 4392445 - 2⁷ = 4392317 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 439240 + ... + 439249.

It is an arithmetic number, because the mean of its divisors is an integer number (1317735).

Almost surely, 2^4392445 is an apocalyptic number.

It is an amenable number.

4392445 is a deficient number, since it is larger than the sum of its proper divisors (878495).

4392445 is an equidigital number, since it uses as much as digits as its factorization.

4392445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878494.

The product of its digits is 17280, while the sum is 31.

The square root of 4392445 is about 2095.8160701741. The cubic root of 4392445 is about 163.7704129322.

The spelling of 4392445 in words is "four million, three hundred ninety-two thousand, four hundred forty-five".