1139811827 has 8 divisors (see below), whose sum is σ = 1421064192. Its totient is φ = 888165000.

The previous prime is 1139811817. The next prime is 1139811863. The reversal of 1139811827 is 7281189311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1139811827 - 2⁴ = 1139811811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1139811817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7401299 + ... + 7401452.

It is an arithmetic number, because the mean of its divisors is an integer number (177633024).

Almost surely, 2^1139811827 is an apocalyptic number.

1139811827 is a deficient number, since it is larger than the sum of its proper divisors (281252365).

1139811827 is a wasteful number, since it uses less digits than its factorization.

1139811827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14802769.

The product of its digits is 24192, while the sum is 41.

The square root of 1139811827 is about 33761.0993156325. The cubic root of 1139811827 is about 1044.5864459456.

The spelling of 1139811827 in words is "one billion, one hundred thirty-nine million, eight hundred eleven thousand, eight hundred twenty-seven".