109905790 has 32 divisors (see below), whose sum is σ = 203148000. Its totient is φ = 42795648.

The previous prime is 109905781. The next prime is 109905797. The reversal of 109905790 is 97509901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109905797) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63456 + ... + 65164.

It is an arithmetic number, because the mean of its divisors is an integer number (6348375).

Almost surely, 2^109905790 is an apocalyptic number.

109905790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

109905790 is a deficient number, since it is larger than the sum of its proper divisors (93242210).

109905790 is a wasteful number, since it uses less digits than its factorization.

109905790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1884.

The product of its (nonzero) digits is 25515, while the sum is 40.

The square root of 109905790 is about 10483.5962341174. The cubic root of 109905790 is about 479.0051588597.

The spelling of 109905790 in words is "one hundred nine million, nine hundred five thousand, seven hundred ninety".