8899779990 has 32 divisors (see below), whose sum is σ = 22615912800. Its totient is φ = 2233670144.

The previous prime is 8899779953. The next prime is 8899779991. The reversal of 8899779990 is 999779988.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8899779991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8724765 + ... + 8725784.

It is an arithmetic number, because the mean of its divisors is an integer number (706747275).

Almost surely, 2^8899779990 is an apocalyptic number.

8899779990 is an abundant number, since it is smaller than the sum of its proper divisors (13716132810).

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

8899779990 is a wasteful number, since it uses less digits than its factorization.

8899779990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17450576.

The product of its (nonzero) digits is 185177664, while the sum is 75.

The square root of 8899779990 is about 94338.6452626918. The cubic root of 8899779990 is about 2072.3340215903.

It can be divided in two parts, 889 and 9779990, that added together give a palindrome (9780879).

The spelling of 8899779990 in words is "eight billion, eight hundred ninety-nine million, seven hundred seventy-nine thousand, nine hundred ninety".