9879837939 has 24 divisors (see below), whose sum is σ = 14997448752. Its totient is φ = 6259498560.

The previous prime is 9879837901. The next prime is 9879837941. The reversal of 9879837939 is 9397389789.

It is not a de Polignac number, because 9879837939 - 2²³ = 9871449331 is a prime.

It is a super-2 number, since 2×9879837939² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9879837959) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 330672 + ... + 359309.

It is an arithmetic number, because the mean of its divisors is an integer number (624893698).

Almost surely, 2^9879837939 is an apocalyptic number.

9879837939 is a deficient number, since it is larger than the sum of its proper divisors (5117610813).

9879837939 is a wasteful number, since it uses less digits than its factorization.

9879837939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690067 (or 690064 counting only the distinct ones).

The product of its digits is 185177664, while the sum is 72.

The square root of 9879837939 is about 99397.3739039417. The cubic root of 9879837939 is about 2145.7705162157.

The spelling of 9879837939 in words is "nine billion, eight hundred seventy-nine million, eight hundred thirty-seven thousand, nine hundred thirty-nine".