1139558369 has 2 divisors, whose sum is σ = 1139558370. Its totient is φ = 1139558368.

The previous prime is 1139558363. The next prime is 1139558411. The reversal of 1139558369 is 9638559311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 972192400 + 167365969 = 31180^2 + 12937^2 .

It is a cyclic number.

It is not a de Polignac number, because 1139558369 - 2²⁰ = 1138509793 is a prime.

It is a super-2 number, since 2×1139558369² = 2597186552715880322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1139558363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569779184 + 569779185.

It is an arithmetic number, because the mean of its divisors is an integer number (569779185).

Almost surely, 2^1139558369 is an apocalyptic number.

It is an amenable number.

1139558369 is a deficient number, since it is larger than the sum of its proper divisors (1).

1139558369 is an equidigital number, since it uses as much as digits as its factorization.

1139558369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 874800, while the sum is 50.

The square root of 1139558369 is about 33757.3454080738. The cubic root of 1139558369 is about 1044.5090125739.

The spelling of 1139558369 in words is "one billion, one hundred thirty-nine million, five hundred fifty-eight thousand, three hundred sixty-nine".