1166311439 has 8 divisors (see below), whose sum is σ = 1242915840. Its totient is φ = 1091865016.

The previous prime is 1166311423. The next prime is 1166311451. The reversal of 1166311439 is 9341136611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1166311439 - 2⁴ = 1166311423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1166311399 and 1166311408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166311459) 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, 538379 + ... + 540540.

It is an arithmetic number, because the mean of its divisors is an integer number (155364480).

Almost surely, 2^1166311439 is an apocalyptic number.

1166311439 is a deficient number, since it is larger than the sum of its proper divisors (76604401).

1166311439 is a wasteful number, since it uses less digits than its factorization.

1166311439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078989.

The product of its digits is 11664, while the sum is 35.

The square root of 1166311439 is about 34151.3021567260. The cubic root of 1166311439 is about 1052.6197437310.

The spelling of 1166311439 in words is "one billion, one hundred sixty-six million, three hundred eleven thousand, four hundred thirty-nine".