439022897 has 4 divisors (see below), whose sum is σ = 443050740. Its totient is φ = 434995056.

The previous prime is 439022887. The next prime is 439022933. The reversal of 439022897 is 798220934.

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 279859441 + 159163456 = 16729^2 + 12616^2 .

It is a cyclic number.

It is not a de Polignac number, because 439022897 - 2⁸ = 439022641 is a prime.

It is a super-2 number, since 2×439022897² = 385482208180545218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (439022887) 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, 2013758 + ... + 2013975.

It is an arithmetic number, because the mean of its divisors is an integer number (110762685).

Almost surely, 2^439022897 is an apocalyptic number.

It is an amenable number.

439022897 is a deficient number, since it is larger than the sum of its proper divisors (4027843).

439022897 is a wasteful number, since it uses less digits than its factorization.

439022897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4027842.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 439022897 is about 20952.8732397254. The cubic root of 439022897 is about 760.0270633253.

The spelling of 439022897 in words is "four hundred thirty-nine million, twenty-two thousand, eight hundred ninety-seven".