10109945 has 16 divisors (see below), whose sum is σ = 12640320. Its totient is φ = 7756224.

The previous prime is 10109941. The next prime is 10109963. The reversal of 10109945 is 54990101.

It is a cyclic number.

It is not a de Polignac number, because 10109945 - 2² = 10109941 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10109941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12287 + ... + 13083.

It is an arithmetic number, because the mean of its divisors is an integer number (790020).

Almost surely, 2^10109945 is an apocalyptic number.

It is an amenable number.

10109945 is a deficient number, since it is larger than the sum of its proper divisors (2530375).

10109945 is an equidigital number, since it uses as much as digits as its factorization.

10109945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904.

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 10109945 is about 3179.6139702800. The cubic root of 10109945 is about 216.2301573338.

The spelling of 10109945 in words is "ten million, one hundred nine thousand, nine hundred forty-five".