1139823984 has 160 divisors (see below), whose sum is σ = 3368673280. Its totient is φ = 329204736.

The previous prime is 1139823983. The next prime is 1139824039. The reversal of 1139823984 is 4893289311.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139823983) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1505334 + ... + 1506090.

It is an arithmetic number, because the mean of its divisors is an integer number (21054208).

Almost surely, 2^1139823984 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 1139823984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1684336640).

1139823984 is an abundant number, since it is smaller than the sum of its proper divisors (2228849296).

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

1139823984 is a wasteful number, since it uses less digits than its factorization.

1139823984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927 (or 921 counting only the distinct ones).

The product of its digits is 373248, while the sum is 48.

The square root of 1139823984 is about 33761.2793596451. The cubic root of 1139823984 is about 1044.5901597142.

The spelling of 1139823984 in words is "one billion, one hundred thirty-nine million, eight hundred twenty-three thousand, nine hundred eighty-four".