111789399 has 8 divisors (see below), whose sum is σ = 157820400. Its totient is φ = 70142336.

The previous prime is 111789383. The next prime is 111789409. The reversal of 111789399 is 993987111.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 111789399 - 2⁴ = 111789383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111789319) 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, 1095924 + ... + 1096025.

It is an arithmetic number, because the mean of its divisors is an integer number (19727550).

Almost surely, 2^111789399 is an apocalyptic number.

111789399 is a deficient number, since it is larger than the sum of its proper divisors (46031001).

111789399 is a wasteful number, since it uses less digits than its factorization.

111789399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2191969.

The product of its digits is 122472, while the sum is 48.

The square root of 111789399 is about 10573.0506004653. The cubic root of 111789399 is about 481.7261332826.

The spelling of 111789399 in words is "one hundred eleven million, seven hundred eighty-nine thousand, three hundred ninety-nine".