1166238439 has 2 divisors, whose sum is σ = 1166238440. Its totient is φ = 1166238438.

The previous prime is 1166238413. The next prime is 1166238457. The reversal of 1166238439 is 9348326611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1166238439 - 2¹⁵ = 1166205671 is a prime.

It is a super-2 number, since 2×1166238439² = 2720224193202313442, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1166238395 and 1166238404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1166238739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583119219 + 583119220.

It is an arithmetic number, because the mean of its divisors is an integer number (583119220).

Almost surely, 2^1166238439 is an apocalyptic number.

1166238439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166238439 is an equidigital number, since it uses as much as digits as its factorization.

1166238439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 43.

The square root of 1166238439 is about 34150.2333666990. The cubic root of 1166238439 is about 1052.5977819456.

The spelling of 1166238439 in words is "one billion, one hundred sixty-six million, two hundred thirty-eight thousand, four hundred thirty-nine".