1139964 has 48 divisors (see below), whose sum is σ = 3123456. Its totient is φ = 316800.

The previous prime is 1139959. The next prime is 1139989. The reversal of 1139964 is 4699311.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3279 + ... + 3609.

It is an arithmetic number, because the mean of its divisors is an integer number (65072).

2^1139964 is an apocalyptic number.

1139964 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1139964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1561728).

1139964 is an abundant number, since it is smaller than the sum of its proper divisors (1983492).

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

1139964 is a wasteful number, since it uses less digits than its factorization.

1139964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386 (or 384 counting only the distinct ones).

The product of its digits is 5832, while the sum is 33.

The square root of 1139964 is about 1067.6909665254. The cubic root of 1139964 is about 104.4632930455.

The spelling of 1139964 in words is "one million, one hundred thirty-nine thousand, nine hundred sixty-four".