9952565839 has 4 divisors (see below), whose sum is σ = 9953200224. Its totient is φ = 9951931456.

The previous prime is 9952565803. The next prime is 9952565849. The reversal of 9952565839 is 9385652599.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9952565839 - 2⁹ = 9952565327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9952565849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 293047 + ... + 325240.

It is an arithmetic number, because the mean of its divisors is an integer number (2488300056).

Almost surely, 2^9952565839 is an apocalyptic number.

9952565839 is a deficient number, since it is larger than the sum of its proper divisors (634385).

9952565839 is a wasteful number, since it uses less digits than its factorization.

9952565839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634384.

The product of its digits is 26244000, while the sum is 61.

The square root of 9952565839 is about 99762.5472760194. The cubic root of 9952565839 is about 2151.0228296424.

The spelling of 9952565839 in words is "nine billion, nine hundred fifty-two million, five hundred sixty-five thousand, eight hundred thirty-nine".