1139816 has 32 divisors (see below), whose sum is σ = 2349000. Its totient is φ = 517888.

The previous prime is 1139807. The next prime is 1139819. The reversal of 1139816 is 6189311.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1020100 + 119716 = 1010^2 + 346^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

Its product of digits (1296) is a multiple of the sum of its prime divisors (48).

It is not an unprimeable number, because it can be changed into a prime (1139819) 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, 39290 + ... + 39318.

2^1139816 is an apocalyptic number.

It is an amenable number.

1139816 is an abundant number, since it is smaller than the sum of its proper divisors (1209184).

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

1139816 is an equidigital number, since it uses as much as digits as its factorization.

1139816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86 (or 48 counting only the distinct ones).

The product of its digits is 1296, while the sum is 29.

The square root of 1139816 is about 1067.6216558313. The cubic root of 1139816 is about 104.4587720733.

1139816 divided by its sum of digits (29) gives a cube (39304 = 34³).

The spelling of 1139816 in words is "one million, one hundred thirty-nine thousand, eight hundred sixteen".