109445390 has 16 divisors (see below), whose sum is σ = 197331120. Its totient is φ = 43704960.

The previous prime is 109445387. The next prime is 109445393. The reversal of 109445390 is 93544901.

It is an interprime number because it is at equal distance from previous prime (109445387) and next prime (109445393).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 109445390.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109445393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2651 + ... + 15030.

It is an arithmetic number, because the mean of its divisors is an integer number (12333195).

Almost surely, 2^109445390 is an apocalyptic number.

109445390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

109445390 is a deficient number, since it is larger than the sum of its proper divisors (87885730).

109445390 is a wasteful number, since it uses less digits than its factorization.

109445390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18307.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 109445390 is about 10461.6150760769. The cubic root of 109445390 is about 478.3353651031.

The spelling of 109445390 in words is "one hundred nine million, four hundred forty-five thousand, three hundred ninety".