109945215 has 32 divisors (see below), whose sum is σ = 196104960. Its totient is φ = 58443552.

The previous prime is 109945159. The next prime is 109945219. The reversal of 109945215 is 512549901.

It is not a de Polignac number, because 109945215 - 2²⁰ = 108896639 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 109945215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109945219) 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, 45672 + ... + 48018.

It is an arithmetic number, because the mean of its divisors is an integer number (6128280).

Almost surely, 2^109945215 is an apocalyptic number.

109945215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

109945215 is a deficient number, since it is larger than the sum of its proper divisors (86159745).

109945215 is a wasteful number, since it uses less digits than its factorization.

109945215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2708 (or 2702 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 36.

The square root of 109945215 is about 10485.4763840276. The cubic root of 109945215 is about 479.0624276676.

The spelling of 109945215 in words is "one hundred nine million, nine hundred forty-five thousand, two hundred fifteen".