109006905 has 32 divisors (see below), whose sum is σ = 204196608. Its totient is φ = 48614400.

The previous prime is 109006903. The next prime is 109006949. The reversal of 109006905 is 509600901.

It is not a de Polignac number, because 109006905 - 2¹ = 109006903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (109006901) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8356 + ... + 16965.

It is an arithmetic number, because the mean of its divisors is an integer number (6381144).

Almost surely, 2^109006905 is an apocalyptic number.

109006905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

109006905 is a deficient number, since it is larger than the sum of its proper divisors (95189703).

109006905 is a wasteful number, since it uses less digits than its factorization.

109006905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25377.

The product of its (nonzero) digits is 2430, while the sum is 30.

The square root of 109006905 is about 10440.6371931985. The cubic root of 109006905 is about 477.6957047994.

The spelling of 109006905 in words is "one hundred nine million, six thousand, nine hundred five".