2445439 has 4 divisors (see below), whose sum is σ = 2449224. Its totient is φ = 2441656.

The previous prime is 2445437. The next prime is 2445451. The reversal of 2445439 is 9345442.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2445439 - 2¹ = 2445437 is a prime.

It is a d-powerful number, because it can be written as 2²¹ + 4⁵ + 4⁷ + 5⁵ + 4⁹ + 3¹⁰ + 9⁴ .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2445439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2445437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 652 + ... + 2305.

It is an arithmetic number, because the mean of its divisors is an integer number (612306).

2^2445439 is an apocalyptic number.

2445439 is a deficient number, since it is larger than the sum of its proper divisors (3785).

2445439 is an equidigital number, since it uses as much as digits as its factorization.

2445439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3784.

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

The square root of 2445439 is about 1563.7899475313. The cubic root of 2445439 is about 134.7262674726.

The spelling of 2445439 in words is "two million, four hundred forty-five thousand, four hundred thirty-nine".