1139171484 has 48 divisors (see below), whose sum is σ = 2912232960. Its totient is φ = 343712640.

The previous prime is 1139171483. The next prime is 1139171491. The reversal of 1139171484 is 4841719311.

It is a happy number.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139171483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12237 + ... + 49275.

It is an arithmetic number, because the mean of its divisors is an integer number (60671520).

Almost surely, 2^1139171484 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 1139171484, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1456116480).

1139171484 is an abundant number, since it is smaller than the sum of its proper divisors (1773061476).

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

1139171484 is a wasteful number, since it uses less digits than its factorization.

1139171484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37290 (or 37288 counting only the distinct ones).

The product of its digits is 24192, while the sum is 39.

The square root of 1139171484 is about 33751.6145391595. The cubic root of 1139171484 is about 1044.3907940837.

The spelling of 1139171484 in words is "one billion, one hundred thirty-nine million, one hundred seventy-one thousand, four hundred eighty-four".