1139666844 has 48 divisors (see below), whose sum is σ = 2734881408. Its totient is φ = 369215808.

The previous prime is 1139666839. The next prime is 1139666849. The reversal of 1139666844 is 4486669311.

It is an interprime number because it is at equal distance from previous prime (1139666839) and next prime (1139666849).

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

It is a junction number, because it is equal to n+sod(n) for n = 1139666793 and 1139666802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139666849) 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, 59679 + ... + 76425.

It is an arithmetic number, because the mean of its divisors is an integer number (56976696).

Almost surely, 2^1139666844 is an apocalyptic number.

It is an amenable number.

1139666844 is an abundant number, since it is smaller than the sum of its proper divisors (1595214564).

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

1139666844 is a wasteful number, since it uses less digits than its factorization.

1139666844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16914 (or 16912 counting only the distinct ones).

The product of its digits is 746496, while the sum is 48.

The square root of 1139666844 is about 33758.9520571951. The cubic root of 1139666844 is about 1044.5421539274.

The spelling of 1139666844 in words is "one billion, one hundred thirty-nine million, six hundred sixty-six thousand, eight hundred forty-four".