1119911999 has 4 divisors (see below), whose sum is σ = 1122585240. Its totient is φ = 1117238760.

The previous prime is 1119911987. The next prime is 1119912037. The reversal of 1119911999 is 9991199111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9991199111 = 227 ⋅44014093.

It is a cyclic number.

It is not a de Polignac number, because 1119911999 - 2⁸ = 1119911743 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1119911399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1335992 + ... + 1336829.

It is an arithmetic number, because the mean of its divisors is an integer number (280646310).

Almost surely, 2^1119911999 is an apocalyptic number.

1119911999 is a deficient number, since it is larger than the sum of its proper divisors (2673241).

1119911999 is an equidigital number, since it uses as much as digits as its factorization.

1119911999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2673240.

The product of its digits is 59049, while the sum is 50.

The square root of 1119911999 is about 33465.0862691253. The cubic root of 1119911999 is about 1038.4716205701.

The spelling of 1119911999 in words is "one billion, one hundred nineteen million, nine hundred eleven thousand, nine hundred ninety-nine".