1139917789 has 8 divisors (see below), whose sum is σ = 1201030272. Its totient is φ = 1079767920.

The previous prime is 1139917777. The next prime is 1139917817. The reversal of 1139917789 is 9877199311.

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 1139917789 - 2⁷ = 1139917661 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 (1139917189) 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, 238222 + ... + 242959.

It is an arithmetic number, because the mean of its divisors is an integer number (150128784).

Almost surely, 2^1139917789 is an apocalyptic number.

It is an amenable number.

1139917789 is a deficient number, since it is larger than the sum of its proper divisors (61112483).

1139917789 is a wasteful number, since it uses less digits than its factorization.

1139917789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481307.

The product of its digits is 857304, while the sum is 55.

The square root of 1139917789 is about 33762.6685704788. The cubic root of 1139917789 is about 1044.6188147503.

The spelling of 1139917789 in words is "one billion, one hundred thirty-nine million, nine hundred seventeen thousand, seven hundred eighty-nine".