1139230579 has 4 divisors (see below), whose sum is σ = 1142495200. Its totient is φ = 1135965960.

The previous prime is 1139230559. The next prime is 1139230591. The reversal of 1139230579 is 9750329311.

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 1139230579 - 2⁷ = 1139230451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1139230529) 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, 1631787 + ... + 1632484.

It is an arithmetic number, because the mean of its divisors is an integer number (285623800).

Almost surely, 2^1139230579 is an apocalyptic number.

1139230579 is a deficient number, since it is larger than the sum of its proper divisors (3264621).

1139230579 is an equidigital number, since it uses as much as digits as its factorization.

1139230579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3264620.

The product of its (nonzero) digits is 51030, while the sum is 40.

The square root of 1139230579 is about 33752.4899674083. The cubic root of 1139230579 is about 1044.4088531754.

The spelling of 1139230579 in words is "one billion, one hundred thirty-nine million, two hundred thirty thousand, five hundred seventy-nine".