1159231939 has 8 divisors (see below), whose sum is σ = 1171719360. Its totient is φ = 1146803136.

The previous prime is 1159231903. The next prime is 1159231961. The reversal of 1159231939 is 9391329511.

It is a happy number.

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 1159231939 - 2¹¹ = 1159229891 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1159231895 and 1159231904.

It is not an unprimeable number, because it can be changed into a prime (1159231979) 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, 25702 + ... + 54580.

It is an arithmetic number, because the mean of its divisors is an integer number (146464920).

Almost surely, 2^1159231939 is an apocalyptic number.

1159231939 is a deficient number, since it is larger than the sum of its proper divisors (12487421).

1159231939 is a wasteful number, since it uses less digits than its factorization.

1159231939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29309.

The product of its digits is 65610, while the sum is 43.

The square root of 1159231939 is about 34047.4953410673. The cubic root of 1159231939 is about 1050.4856223806.

The spelling of 1159231939 in words is "one billion, one hundred fifty-nine million, two hundred thirty-one thousand, nine hundred thirty-nine".