109999905 has 8 divisors (see below), whose sum is σ = 175999872. Its totient is φ = 58666608.

The previous prime is 109999889. The next prime is 109999913. The reversal of 109999905 is 509999901.

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

It is not a de Polignac number, because 109999905 - 2⁴ = 109999889 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3666649 + ... + 3666678.

It is an arithmetic number, because the mean of its divisors is an integer number (21999984).

Almost surely, 2^109999905 is an apocalyptic number.

109999905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

109999905 is a deficient number, since it is larger than the sum of its proper divisors (65999967).

109999905 is an equidigital number, since it uses as much as digits as its factorization.

109999905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7333335.

The product of its (nonzero) digits is 295245, while the sum is 51.

The square root of 109999905 is about 10488.0839527532. The cubic root of 109999905 is about 479.1418477714.

The spelling of 109999905 in words is "one hundred nine million, nine hundred ninety-nine thousand, nine hundred five".