8941839509 has 4 divisors (see below), whose sum is σ = 9110553516. Its totient is φ = 8773125504.

The previous prime is 8941839463. The next prime is 8941839541. The reversal of 8941839509 is 9059381498.

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 7507702609 + 1434136900 = 86647^2 + 37870^2 .

It is a cyclic number.

It is not a de Polignac number, because 8941839509 - 2²⁰ = 8940790933 is a prime.

It is a super-2 number, since 2×8941839509² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8941839589) 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, 84356924 + ... + 84357029.

It is an arithmetic number, because the mean of its divisors is an integer number (2277638379).

Almost surely, 2^8941839509 is an apocalyptic number.

It is an amenable number.

8941839509 is a deficient number, since it is larger than the sum of its proper divisors (168714007).

8941839509 is a wasteful number, since it uses less digits than its factorization.

8941839509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168714006.

The product of its (nonzero) digits is 2799360, while the sum is 56.

The square root of 8941839509 is about 94561.3002713055. The cubic root of 8941839509 is about 2075.5934439636.

The spelling of 8941839509 in words is "eight billion, nine hundred forty-one million, eight hundred thirty-nine thousand, five hundred nine".