109145990 has 8 divisors (see below), whose sum is σ = 196462800. Its totient is φ = 43658392.

The previous prime is 109145989. The next prime is 109146029. The reversal of 109145990 is 99541901.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5457290 + ... + 5457309.

It is an arithmetic number, because the mean of its divisors is an integer number (24557850).

Almost surely, 2^109145990 is an apocalyptic number.

109145990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

109145990 is a deficient number, since it is larger than the sum of its proper divisors (87316810).

109145990 is a wasteful number, since it uses less digits than its factorization.

109145990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10914606.

The product of its (nonzero) digits is 14580, while the sum is 38.

The square root of 109145990 is about 10447.2958223648. The cubic root of 109145990 is about 477.8987869479.

The spelling of 109145990 in words is "one hundred nine million, one hundred forty-five thousand, nine hundred ninety".