252447445939 has 16 divisors (see below), whose sum is σ = 293155138080. Its totient is φ = 215379267840.

The previous prime is 252447445883. The next prime is 252447445979. The reversal of 252447445939 is 939544744252.

It is a cyclic number.

It is not a de Polignac number, because 252447445939 - 2¹³ = 252447437747 is a prime.

It is a super-2 number, since 2×252447445939² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252447445979) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12453952 + ... + 12474205.

It is an arithmetic number, because the mean of its divisors is an integer number (18322196130).

Almost surely, 2^252447445939 is an apocalyptic number.

252447445939 is a deficient number, since it is larger than the sum of its proper divisors (40707692141).

252447445939 is a wasteful number, since it uses less digits than its factorization.

252447445939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24928230.

The product of its digits is 43545600, while the sum is 58.

The spelling of 252447445939 in words is "two hundred fifty-two billion, four hundred forty-seven million, four hundred forty-five thousand, nine hundred thirty-nine".