439698961 has 9 divisors (see below), whose sum is σ = 476419089. Its totient is φ = 405624336.

The previous prime is 439698949. The next prime is 439698967. The reversal of 439698961 is 169896934.

The square root of 439698961 is 20969.

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

It can be written as a sum of positive squares in 4 ways, for example, as 30041361 + 409657600 = 5481^2 + 20240^2 .

It is not a de Polignac number, because 439698961 - 2¹¹ = 439696913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (439698967) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 271791 + ... + 273403.

Almost surely, 2^439698961 is an apocalyptic number.

439698961 is the 20969-th square number.

439698961 is the 10485-th centered octagonal number.

It is an amenable number.

439698961 is a deficient number, since it is larger than the sum of its proper divisors (36720128).

439698961 is an frugal number, since it uses more digits than its factorization.

439698961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3252 (or 1626 counting only the distinct ones).

The product of its digits is 2519424, while the sum is 55.

The cubic root of 439698961 is about 760.4169924255.

The spelling of 439698961 in words is "four hundred thirty-nine million, six hundred ninety-eight thousand, nine hundred sixty-one".