9778889499 has 8 divisors (see below), whose sum is σ = 13049064720. Its totient is φ = 6513986976.

The previous prime is 9778889489. The next prime is 9778889503. The reversal of 9778889499 is 9949888779.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9778889499 - 2²⁰ = 9777840923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9778889489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1313844 + ... + 1321265.

It is an arithmetic number, because the mean of its divisors is an integer number (1631133090).

Almost surely, 2^9778889499 is an apocalyptic number.

9778889499 is a deficient number, since it is larger than the sum of its proper divisors (3270175221).

9778889499 is a wasteful number, since it uses less digits than its factorization.

9778889499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2636349.

The product of its digits is 658409472, while the sum is 78.

The square root of 9778889499 is about 98888.2677520443. The cubic root of 9778889499 is about 2138.4372597438.

The spelling of 9778889499 in words is "nine billion, seven hundred seventy-eight million, eight hundred eighty-nine thousand, four hundred ninety-nine".