109745890 has 32 divisors (see below), whose sum is σ = 208682496. Its totient is φ = 41489280.

The previous prime is 109745873. The next prime is 109745891. The reversal of 109745890 is 98547901.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (109745891) 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, 9214 + ... + 17446.

It is an arithmetic number, because the mean of its divisors is an integer number (6521328).

Almost surely, 2^109745890 is an apocalyptic number.

109745890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

109745890 is a deficient number, since it is larger than the sum of its proper divisors (98936606).

109745890 is a wasteful number, since it uses less digits than its factorization.

109745890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8314.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 109745890 is about 10475.9672584444. The cubic root of 109745890 is about 478.7727473870.

The spelling of 109745890 in words is "one hundred nine million, seven hundred forty-five thousand, eight hundred ninety".