9012989779 has 8 divisors (see below), whose sum is σ = 9551193120. Its totient is φ = 8489947200.

The previous prime is 9012989753. The next prime is 9012989809. The reversal of 9012989779 is 9779892109.

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

It is not a de Polignac number, because 9012989779 - 2⁵ = 9012989747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9012989719) 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, 3788967 + ... + 3791344.

It is an arithmetic number, because the mean of its divisors is an integer number (1193899140).

Almost surely, 2^9012989779 is an apocalyptic number.

9012989779 is a deficient number, since it is larger than the sum of its proper divisors (538203341).

9012989779 is a wasteful number, since it uses less digits than its factorization.

9012989779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7580381.

The product of its (nonzero) digits is 5143824, while the sum is 61.

The square root of 9012989779 is about 94936.7672664284. The cubic root of 9012989779 is about 2081.0840763948.

The spelling of 9012989779 in words is "nine billion, twelve million, nine hundred eighty-nine thousand, seven hundred seventy-nine".