109203445 has 32 divisors (see below), whose sum is σ = 146361600. Its totient is φ = 77704704.

The previous prime is 109203433. The next prime is 109203463. The reversal of 109203445 is 544302901.

It is a cyclic number.

It is not a de Polignac number, because 109203445 - 2¹⁹ = 108679157 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 248536 + ... + 248974.

It is an arithmetic number, because the mean of its divisors is an integer number (4573800).

Almost surely, 2^109203445 is an apocalyptic number.

It is an amenable number.

109203445 is a deficient number, since it is larger than the sum of its proper divisors (37158155).

109203445 is a wasteful number, since it uses less digits than its factorization.

109203445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 109203445 is about 10450.0452152132. The cubic root of 109203445 is about 477.9826283493.

It can be divided in two parts, 10920 and 3445, that added together give a triangular number (14365 = T₁₆₉).

The spelling of 109203445 in words is "one hundred nine million, two hundred three thousand, four hundred forty-five".