109225990 has 32 divisors (see below), whose sum is σ = 201442464. Its totient is φ = 42627840.

The previous prime is 109225943. The next prime is 109226021. The reversal of 109225990 is 99522901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82917 + ... + 84223.

It is an arithmetic number, because the mean of its divisors is an integer number (6295077).

Almost surely, 2^109225990 is an apocalyptic number.

109225990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

109225990 is a deficient number, since it is larger than the sum of its proper divisors (92216474).

109225990 is a wasteful number, since it uses less digits than its factorization.

109225990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1512.

The product of its (nonzero) digits is 14580, while the sum is 37.

The square root of 109225990 is about 10451.1238630111. The cubic root of 109225990 is about 478.0155191824.

It can be divided in two parts, 109225 and 990, that added together give a triangular number (110215 = T₄₆₉).

The spelling of 109225990 in words is "one hundred nine million, two hundred twenty-five thousand, nine hundred ninety".