1139008 has 42 divisors (see below), whose sum is σ = 2501646. Its totient is φ = 511488.

The previous prime is 1139003. The next prime is 1139011. The reversal of 1139008 is 8009311.

It can be written as a sum of positive squares in 3 ways, for example, as 419904 + 719104 = 648^2 + 848^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1139008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139003) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30766 + ... + 30802.

It is an arithmetic number, because the mean of its divisors is an integer number (59563).

2^1139008 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 1139008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1250823).

1139008 is an abundant number, since it is smaller than the sum of its proper divisors (1362638).

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

1139008 is an equidigital number, since it uses as much as digits as its factorization.

1139008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99 (or 52 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 1139008 is about 1067.2431775373. The cubic root of 1139008 is about 104.4340831061.

The spelling of 1139008 in words is "one million, one hundred thirty-nine thousand, eight".