9779789375 has 30 divisors (see below), whose sum is σ = 12502510416. Its totient is φ = 7644096000.

The previous prime is 9779789339. The next prime is 9779789377. The reversal of 9779789375 is 5739879779.

It is not a de Polignac number, because 9779789375 - 2¹⁰ = 9779788351 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9779789299 and 9779789308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9779789377) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 16949087 + ... + 16949663.

Almost surely, 2^9779789375 is an apocalyptic number.

9779789375 is a deficient number, since it is larger than the sum of its proper divisors (2722721041).

9779789375 is an frugal number, since it uses more digits than its factorization.

9779789375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221 (or 629 counting only the distinct ones).

The product of its digits is 210039480, while the sum is 71.

The square root of 9779789375 is about 98892.8176107851. The cubic root of 9779789375 is about 2138.5028523772.

The spelling of 9779789375 in words is "nine billion, seven hundred seventy-nine million, seven hundred eighty-nine thousand, three hundred seventy-five".