439531225 has 27 divisors (see below), whose sum is σ = 635061567. Its totient is φ = 300889680.

The previous prime is 439531207. The next prime is 439531229. The reversal of 439531225 is 522135934.

The square root of 439531225 is 20965.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 158231241 + 281299984 = 12579^2 + 16772^2 .

It is not a de Polignac number, because 439531225 - 2¹¹ = 439529177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (439531229) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 733476 + ... + 734074.

Almost surely, 2^439531225 is an apocalyptic number.

439531225 is the 20965-th square number.

439531225 is the 10483-rd centered octagonal number.

It is an amenable number.

439531225 is a deficient number, since it is larger than the sum of its proper divisors (195530342).

439531225 is an frugal number, since it uses more digits than its factorization.

439531225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222 (or 611 counting only the distinct ones).

The product of its digits is 32400, while the sum is 34.

The cubic root of 439531225 is about 760.3202857099.

Multiplying 439531225 by its product of digits (32400), we get a square (14240811690000 = 3773700²).

The spelling of 439531225 in words is "four hundred thirty-nine million, five hundred thirty-one thousand, two hundred twenty-five".