439427245 has 4 divisors (see below), whose sum is σ = 527312700. Its totient is φ = 351541792.

The previous prime is 439427243. The next prime is 439427257. The reversal of 439427245 is 542724934.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 542724934 = 2 ⋅271362467.

It can be written as a sum of positive squares in 2 ways, for example, as 337861161 + 101566084 = 18381^2 + 10078^2 .

It is a cyclic number.

It is not a de Polignac number, because 439427245 - 2¹ = 439427243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 439427198 and 439427207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (439427243) 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, 43942720 + ... + 43942729.

It is an arithmetic number, because the mean of its divisors is an integer number (131828175).

Almost surely, 2^439427245 is an apocalyptic number.

It is an amenable number.

439427245 is a deficient number, since it is larger than the sum of its proper divisors (87885455).

439427245 is an equidigital number, since it uses as much as digits as its factorization.

439427245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87885454.

The product of its digits is 241920, while the sum is 40.

The square root of 439427245 is about 20962.5200059535. The cubic root of 439427245 is about 760.2603246014.

The spelling of 439427245 in words is "four hundred thirty-nine million, four hundred twenty-seven thousand, two hundred forty-five".