1139533959 has 8 divisors (see below), whose sum is σ = 1524328960. Its totient is φ = 757214136.

The previous prime is 1139533943. The next prime is 1139534047. The reversal of 1139533959 is 9593359311.

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

It is not a de Polignac number, because 1139533959 - 2⁴ = 1139533943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139533159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 617719 + ... + 619560.

It is an arithmetic number, because the mean of its divisors is an integer number (190541120).

Almost surely, 2^1139533959 is an apocalyptic number.

1139533959 is a deficient number, since it is larger than the sum of its proper divisors (384795001).

1139533959 is a wasteful number, since it uses less digits than its factorization.

1139533959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1237589.

The product of its digits is 492075, while the sum is 48.

The square root of 1139533959 is about 33756.9838551965. The cubic root of 1139533959 is about 1044.5015545248.

It can be divided in two parts, 11395 and 33959, that added together give a palindrome (45354).

The spelling of 1139533959 in words is "one billion, one hundred thirty-nine million, five hundred thirty-three thousand, nine hundred fifty-nine".