1166950399 has 4 divisors (see below), whose sum is σ = 1168051320. Its totient is φ = 1165849480.

The previous prime is 1166950387. The next prime is 1166950423. The reversal of 1166950399 is 9930596611.

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 1166950399 - 2⁷ = 1166950271 is a prime.

It is a super-3 number, since 3×1166950399³ (a number of 28 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166950339) 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, 548869 + ... + 550990.

It is an arithmetic number, because the mean of its divisors is an integer number (292012830).

Almost surely, 2^1166950399 is an apocalyptic number.

1166950399 is a deficient number, since it is larger than the sum of its proper divisors (1100921).

1166950399 is a wasteful number, since it uses less digits than its factorization.

1166950399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100920.

The product of its (nonzero) digits is 393660, while the sum is 49.

The square root of 1166950399 is about 34160.6557167745. The cubic root of 1166950399 is about 1052.8119334276.

The spelling of 1166950399 in words is "one billion, one hundred sixty-six million, nine hundred fifty thousand, three hundred ninety-nine".