1139886608 has 120 divisors (see below), whose sum is σ = 2752279200. Its totient is φ = 454616064.

The previous prime is 1139886607. The next prime is 1139886617. The reversal of 1139886608 is 8066889311.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1139886607) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 878216 + ... + 879512.

It is an arithmetic number, because the mean of its divisors is an integer number (22935660).

Almost surely, 2^1139886608 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 1139886608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1376139600).

1139886608 is an abundant number, since it is smaller than the sum of its proper divisors (1612392592).

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

1139886608 is a wasteful number, since it uses less digits than its factorization.

1139886608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397 (or 1384 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 50.

The square root of 1139886608 is about 33762.2067999116. The cubic root of 1139886608 is about 1044.6092899241.

The spelling of 1139886608 in words is "one billion, one hundred thirty-nine million, eight hundred eighty-six thousand, six hundred eight".