109991982 has 8 divisors (see below), whose sum is σ = 219983976. Its totient is φ = 36663992.

The previous prime is 109991977. The next prime is 109992017. The reversal of 109991982 is 289199901.

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

109991982 is an admirable number.

It is a super-2 number, since 2×109991982² = 24196472208576648, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9165993 + ... + 9166004.

It is an arithmetic number, because the mean of its divisors is an integer number (27497997).

Almost surely, 2^109991982 is an apocalyptic number.

109991982 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

109991982 is a wasteful number, since it uses less digits than its factorization.

109991982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18332002.

The product of its (nonzero) digits is 104976, while the sum is 48.

The square root of 109991982 is about 10487.7062315837. The cubic root of 109991982 is about 479.1303437251.

The spelling of 109991982 in words is "one hundred nine million, nine hundred ninety-one thousand, nine hundred eighty-two".