439379945 has 4 divisors (see below), whose sum is σ = 527255940. Its totient is φ = 351503952.

The previous prime is 439379939. The next prime is 439379947. The reversal of 439379945 is 549973934.

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 216295849 + 223084096 = 14707^2 + 14936^2 .

It is a cyclic number.

It is not a de Polignac number, because 439379945 - 2⁴ = 439379929 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (439379947) 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, 43937990 + ... + 43937999.

It is an arithmetic number, because the mean of its divisors is an integer number (131813985).

Almost surely, 2^439379945 is an apocalyptic number.

It is an amenable number.

439379945 is a deficient number, since it is larger than the sum of its proper divisors (87875995).

439379945 is an equidigital number, since it uses as much as digits as its factorization.

439379945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87875994.

The product of its digits is 3674160, while the sum is 53.

The square root of 439379945 is about 20961.3917715404. The cubic root of 439379945 is about 760.2330454525.

The spelling of 439379945 in words is "four hundred thirty-nine million, three hundred seventy-nine thousand, nine hundred forty-five".