9642839441 has 4 divisors (see below), whose sum is σ = 9684225252. Its totient is φ = 9601453632.

The previous prime is 9642839431. The next prime is 9642839537. The reversal of 9642839441 is 1449382469.

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 3516490000 + 6126349441 = 59300^2 + 78271^2 .

It is a cyclic number.

It is not a de Polignac number, because 9642839441 - 2¹⁸ = 9642577297 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 9642839441.

It is not an unprimeable number, because it can be changed into a prime (9642839411) 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, 20692556 + ... + 20693021.

It is an arithmetic number, because the mean of its divisors is an integer number (2421056313).

Almost surely, 2^9642839441 is an apocalyptic number.

It is an amenable number.

9642839441 is a deficient number, since it is larger than the sum of its proper divisors (41385811).

9642839441 is a wasteful number, since it uses less digits than its factorization.

9642839441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41385810.

The product of its digits is 1492992, while the sum is 50.

The square root of 9642839441 is about 98197.9604727104. The cubic root of 9642839441 is about 2128.4738155067.

The spelling of 9642839441 in words is "nine billion, six hundred forty-two million, eight hundred thirty-nine thousand, four hundred forty-one".