2439445 has 4 divisors (see below), whose sum is σ = 2927340. Its totient is φ = 1951552.

The previous prime is 2439443. The next prime is 2439457. The reversal of 2439445 is 5449342.

It is a happy number.

2439445 is nontrivially palindromic in base 6 and base 9.

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 1661521 + 777924 = 1289^2 + 882^2 .

It is a cyclic number.

It is not a de Polignac number, because 2439445 - 2¹ = 2439443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2439443) 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, 243940 + ... + 243949.

It is an arithmetic number, because the mean of its divisors is an integer number (731835).

2^2439445 is an apocalyptic number.

It is an amenable number.

2439445 is a deficient number, since it is larger than the sum of its proper divisors (487895).

2439445 is an equidigital number, since it uses as much as digits as its factorization.

2439445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487894.

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

The square root of 2439445 is about 1561.8722739072. The cubic root of 2439445 is about 134.6161018486.

The spelling of 2439445 in words is "two million, four hundred thirty-nine thousand, four hundred forty-five".