1139475771 has 24 divisors (see below), whose sum is σ = 1980043520. Its totient is φ = 616858416.

The previous prime is 1139475763. The next prime is 1139475793. The reversal of 1139475771 is 1775749311.

1139475771 is a `hidden beast` number, since 1 + 1 + 39 + 47 + 577 + 1 = 666.

It is not a de Polignac number, because 1139475771 - 2³ = 1139475763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1139475671) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 474775 + ... + 477168.

Almost surely, 2^1139475771 is an apocalyptic number.

1139475771 is a deficient number, since it is larger than the sum of its proper divisors (840567749).

1139475771 is a wasteful number, since it uses less digits than its factorization.

1139475771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 951975 (or 951972 counting only the distinct ones).

The product of its digits is 185220, while the sum is 45.

The square root of 1139475771 is about 33756.1219780946. The cubic root of 1139475771 is about 1044.4837757681.

The spelling of 1139475771 in words is "one billion, one hundred thirty-nine million, four hundred seventy-five thousand, seven hundred seventy-one".