109021938 has 16 divisors (see below), whose sum is σ = 218280096. Its totient is φ = 36301280.

The previous prime is 109021903. The next prime is 109021949. The reversal of 109021938 is 839120901.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 109021899 and 109021908.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3531 + ... + 15182.

It is an arithmetic number, because the mean of its divisors is an integer number (13642506).

Almost surely, 2^109021938 is an apocalyptic number.

109021938 is an abundant number, since it is smaller than the sum of its proper divisors (109258158).

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

109021938 is a wasteful number, since it uses less digits than its factorization.

109021938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19689.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 109021938 is about 10441.3570957036. The cubic root of 109021938 is about 477.7176632537.

The spelling of 109021938 in words is "one hundred nine million, twenty-one thousand, nine hundred thirty-eight".