1139427740 has 48 divisors (see below), whose sum is σ = 2612826720. Its totient is φ = 413940480.

The previous prime is 1139427683. The next prime is 1139427769. The reversal of 1139427740 is 477249311.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1139427694 and 1139427703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 326726 + ... + 330194.

It is an arithmetic number, because the mean of its divisors is an integer number (54433890).

Almost surely, 2^1139427740 is an apocalyptic number.

1139427740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1139427740 is an abundant number, since it is smaller than the sum of its proper divisors (1473398980).

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

1139427740 is a wasteful number, since it uses less digits than its factorization.

1139427740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4982 (or 4980 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 1139427740 is about 33755.4105292766. The cubic root of 1139427740 is about 1044.4690999243.

The spelling of 1139427740 in words is "one billion, one hundred thirty-nine million, four hundred twenty-seven thousand, seven hundred forty".