1139976 has 48 divisors (see below), whose sum is σ = 3144960. Its totient is φ = 372960.

The previous prime is 1139959. The next prime is 1139989. The reversal of 1139976 is 6799311.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1139976.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5001 + ... + 5223.

It is an arithmetic number, because the mean of its divisors is an integer number (65520).

2^1139976 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 1139976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1572480).

1139976 is an abundant number, since it is smaller than the sum of its proper divisors (2004984).

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

1139976 is a wasteful number, since it uses less digits than its factorization.

1139976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306 (or 299 counting only the distinct ones).

The product of its digits is 10206, while the sum is 36.

The square root of 1139976 is about 1067.6965861142. The cubic root of 1139976 is about 104.4636595936.

It can be divided in two parts, 113997 and 6, that added together give a triangular number (114003 = T₄₇₇).

The spelling of 1139976 in words is "one million, one hundred thirty-nine thousand, nine hundred seventy-six".