1139170439 has 4 divisors (see below), whose sum is σ = 1242731400. Its totient is φ = 1035609480.

The previous prime is 1139170399. The next prime is 1139170447. The reversal of 1139170439 is 9340719311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1139170439 - 2²⁰ = 1138121863 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 (1139173439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51780464 + ... + 51780485.

It is an arithmetic number, because the mean of its divisors is an integer number (310682850).

Almost surely, 2^1139170439 is an apocalyptic number.

1139170439 is a deficient number, since it is larger than the sum of its proper divisors (103560961).

1139170439 is a wasteful number, since it uses less digits than its factorization.

1139170439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103560960.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 1139170439 is about 33751.5990584150. The cubic root of 1139170439 is about 1044.3904747321.

The spelling of 1139170439 in words is "one billion, one hundred thirty-nine million, one hundred seventy thousand, four hundred thirty-nine".