1139556429 has 12 divisors (see below), whose sum is σ = 1795664832. Its totient is φ = 690640200.

The previous prime is 1139556409. The next prime is 1139556443. The reversal of 1139556429 is 9246559311.

It is not a de Polignac number, because 1139556429 - 2¹² = 1139552333 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139556409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5755237 + ... + 5755434.

It is an arithmetic number, because the mean of its divisors is an integer number (149638736).

Almost surely, 2^1139556429 is an apocalyptic number.

It is an amenable number.

1139556429 is a deficient number, since it is larger than the sum of its proper divisors (656108403).

1139556429 is a wasteful number, since it uses less digits than its factorization.

1139556429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11510688 (or 11510685 counting only the distinct ones).

The product of its digits is 291600, while the sum is 45.

The square root of 1139556429 is about 33757.3166735746. The cubic root of 1139556429 is about 1044.5084198447.

The spelling of 1139556429 in words is "one billion, one hundred thirty-nine million, five hundred fifty-six thousand, four hundred twenty-nine".