1139572909 has 2 divisors, whose sum is σ = 1139572910. Its totient is φ = 1139572908.

The previous prime is 1139572877. The next prime is 1139572913. The reversal of 1139572909 is 9092759311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 844076809 + 295496100 = 29053^2 + 17190^2 .

It is a cyclic number.

It is not a de Polignac number, because 1139572909 - 2⁵ = 1139572877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1139572919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569786454 + 569786455.

It is an arithmetic number, because the mean of its divisors is an integer number (569786455).

Almost surely, 2^1139572909 is an apocalyptic number.

It is an amenable number.

1139572909 is a deficient number, since it is larger than the sum of its proper divisors (1).

1139572909 is an equidigital number, since it uses as much as digits as its factorization.

1139572909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 153090, while the sum is 46.

The square root of 1139572909 is about 33757.5607679228. The cubic root of 1139572909 is about 1044.5134549664.

The spelling of 1139572909 in words is "one billion, one hundred thirty-nine million, five hundred seventy-two thousand, nine hundred nine".