8939972285 has 4 divisors (see below), whose sum is σ = 10727966748. Its totient is φ = 7151977824.

The previous prime is 8939972273. The next prime is 8939972351. The reversal of 8939972285 is 5822799398.

8939972285 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 3310621444 + 5629350841 = 57538^2 + 75029^2 .

It is a cyclic number.

It is not a de Polignac number, because 8939972285 - 2⁶ = 8939972221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 893997224 + ... + 893997233.

It is an arithmetic number, because the mean of its divisors is an integer number (2681991687).

Almost surely, 2^8939972285 is an apocalyptic number.

It is an amenable number.

8939972285 is a deficient number, since it is larger than the sum of its proper divisors (1787994463).

8939972285 is a wasteful number, since it uses less digits than its factorization.

8939972285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1787994462.

The product of its digits is 19595520, while the sum is 62.

The square root of 8939972285 is about 94551.4266682423. The cubic root of 8939972285 is about 2075.4489596105.

The spelling of 8939972285 in words is "eight billion, nine hundred thirty-nine million, nine hundred seventy-two thousand, two hundred eighty-five".