111909963 has 16 divisors (see below), whose sum is σ = 172354176. Its totient is φ = 63834240.

The previous prime is 111909953. The next prime is 111909989. The reversal of 111909963 is 369909111.

It is a happy number.

It is not a de Polignac number, because 111909963 - 2¹⁰ = 111908939 is a prime.

It is a super-2 number, since 2×111909963² = 25047679637322738, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111909913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99181 + ... + 100302.

It is an arithmetic number, because the mean of its divisors is an integer number (10772136).

Almost surely, 2^111909963 is an apocalyptic number.

111909963 is a deficient number, since it is larger than the sum of its proper divisors (60444213).

111909963 is a wasteful number, since it uses less digits than its factorization.

111909963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199514.

The product of its (nonzero) digits is 13122, while the sum is 39.

The square root of 111909963 is about 10578.7505405884. The cubic root of 111909963 is about 481.8992503622.

The spelling of 111909963 in words is "one hundred eleven million, nine hundred nine thousand, nine hundred sixty-three".