9779432880 has 160 divisors (see below), whose sum is σ = 35384592384. Its totient is φ = 2187721728.

The previous prime is 9779432879. The next prime is 9779432881. The reversal of 9779432880 is 882349779.

It is an interprime number because it is at equal distance from previous prime (9779432879) and next prime (9779432881).

It is a self number, because there is not a number n which added to its sum of digits gives 9779432880.

It is not an unprimeable number, because it can be changed into a prime (9779432881) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17034 + ... + 140886.

Almost surely, 2^9779432880 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9779432880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17692296192).

9779432880 is an abundant number, since it is smaller than the sum of its proper divisors (25605159504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9779432880 is a wasteful number, since it uses less digits than its factorization.

9779432880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123923 (or 123917 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 57.

The square root of 9779432880 is about 98891.0151631583. The cubic root of 9779432880 is about 2138.4768676718.

The spelling of 9779432880 in words is "nine billion, seven hundred seventy-nine million, four hundred thirty-two thousand, eight hundred eighty".