52439626009 has 27 divisors (see below), whose sum is σ = 55469678079. Its totient is φ = 49573270560.

The previous prime is 52439626003. The next prime is 52439626013. The reversal of 52439626009 is 90062693425.

The square root of 52439626009 is 228997.

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., 10069520409 + 42370105600 = 100347^2 + 205840^2 .

It is not a de Polignac number, because 52439626009 - 2⁷ = 52439625881 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52439626009.

It is not an unprimeable number, because it can be changed into a prime (52439626003) 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, 589209237 + ... + 589209325.

Almost surely, 2^52439626009 is an apocalyptic number.

52439626009 is the 228997-th square number.

52439626009 is the 114499-th centered octagonal number.

It is an amenable number.

52439626009 is a deficient number, since it is larger than the sum of its proper divisors (3030052070).

52439626009 is an frugal number, since it uses more digits than its factorization.

52439626009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406 (or 203 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 46.

The spelling of 52439626009 in words is "fifty-two billion, four hundred thirty-nine million, six hundred twenty-six thousand, nine".