109998863 has 4 divisors (see below), whose sum is σ = 118460328. Its totient is φ = 101537400.

The previous prime is 109998853. The next prime is 109998871. The reversal of 109998863 is 368899901.

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 109998863 - 2²⁶ = 42889999 is a prime.

It is a super-2 number, since 2×109998863² = 24199499722585538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109998853) 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, 4230713 + ... + 4230738.

It is an arithmetic number, because the mean of its divisors is an integer number (29615082).

Almost surely, 2^109998863 is an apocalyptic number.

109998863 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

109998863 is a deficient number, since it is larger than the sum of its proper divisors (8461465).

109998863 is an equidigital number, since it uses as much as digits as its factorization.

109998863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8461464.

The product of its (nonzero) digits is 839808, while the sum is 53.

The square root of 109998863 is about 10488.0342772132. The cubic root of 109998863 is about 479.1403348387.

The spelling of 109998863 in words is "one hundred nine million, nine hundred ninety-eight thousand, eight hundred sixty-three".