109689858 has 12 divisors (see below), whose sum is σ = 237661398. Its totient is φ = 36563280.

The previous prime is 109689847. The next prime is 109689863. The reversal of 109689858 is 858986901.

It can be written as a sum of positive squares in only one way, i.e., 109558089 + 131769 = 10467^2 + 363^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3046923 + ... + 3046958.

Almost surely, 2^109689858 is an apocalyptic number.

109689858 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

109689858 is an abundant number, since it is smaller than the sum of its proper divisors (127971540).

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

109689858 is a wasteful number, since it uses less digits than its factorization.

109689858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6093889 (or 6093886 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 54.

The square root of 109689858 is about 10473.2926054799. The cubic root of 109689858 is about 478.6912525768.

The spelling of 109689858 in words is "one hundred nine million, six hundred eighty-nine thousand, eight hundred fifty-eight".