109907985 has 16 divisors (see below), whose sum is σ = 191839680. Its totient is φ = 53288640.

The previous prime is 109907977. The next prime is 109908011. The reversal of 109907985 is 589709901.

It is not a de Polignac number, because 109907985 - 2³ = 109907977 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 332890 + ... + 333219.

It is an arithmetic number, because the mean of its divisors is an integer number (11989980).

Almost surely, 2^109907985 is an apocalyptic number.

109907985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

109907985 is a deficient number, since it is larger than the sum of its proper divisors (81931695).

109907985 is a wasteful number, since it uses less digits than its factorization.

109907985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666128.

The product of its (nonzero) digits is 204120, while the sum is 48.

The square root of 109907985 is about 10483.7009209534. The cubic root of 109907985 is about 479.0083476796.

The spelling of 109907985 in words is "one hundred nine million, nine hundred seven thousand, nine hundred eighty-five".