1139216 has 20 divisors (see below), whose sum is σ = 2377452. Its totient is φ = 525696.

The previous prime is 1139197. The next prime is 1139227. The reversal of 1139216 is 6129311.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 774400 + 364816 = 880^2 + 604^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1139191 and 1139200.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2531 + ... + 2946.

2^1139216 is an apocalyptic number.

1139216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1139216 is an abundant number, since it is smaller than the sum of its proper divisors (1238236).

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

1139216 is a wasteful number, since it uses less digits than its factorization.

1139216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5498 (or 5492 counting only the distinct ones).

The product of its digits is 324, while the sum is 23.

The square root of 1139216 is about 1067.3406204207. The cubic root of 1139216 is about 104.4404397975.

The spelling of 1139216 in words is "one million, one hundred thirty-nine thousand, two hundred sixteen".