108909938 has 8 divisors (see below), whose sum is σ = 171963120. Its totient is φ = 51588900.

The previous prime is 108909937. The next prime is 108909943. The reversal of 108909938 is 839909801.

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

It is a super-2 number, since 2×108909938² = 23722749190327688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 108909892 and 108909901.

It is not an unprimeable number, because it can be changed into a prime (108909937) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1432988 + ... + 1433063.

It is an arithmetic number, because the mean of its divisors is an integer number (21495390).

Almost surely, 2^108909938 is an apocalyptic number.

108909938 is a deficient number, since it is larger than the sum of its proper divisors (63053182).

108909938 is a wasteful number, since it uses less digits than its factorization.

108909938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2866072.

The product of its (nonzero) digits is 139968, while the sum is 47.

The square root of 108909938 is about 10435.9924300471. The cubic root of 108909938 is about 477.5540181755.

The spelling of 108909938 in words is "one hundred eight million, nine hundred nine thousand, nine hundred thirty-eight".