109432385 has 4 divisors (see below), whose sum is σ = 131318868. Its totient is φ = 87545904.

The previous prime is 109432369. The next prime is 109432423. The reversal of 109432385 is 583234901.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 80874049 + 28558336 = 8993^2 + 5344^2 .

It is a cyclic number.

It is not a de Polignac number, because 109432385 - 2⁴ = 109432369 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10943234 + ... + 10943243.

It is an arithmetic number, because the mean of its divisors is an integer number (32829717).

Almost surely, 2^109432385 is an apocalyptic number.

It is an amenable number.

109432385 is a deficient number, since it is larger than the sum of its proper divisors (21886483).

109432385 is an equidigital number, since it uses as much as digits as its factorization.

109432385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21886482.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 109432385 is about 10460.9934996634. The cubic root of 109432385 is about 478.3164180653.

The spelling of 109432385 in words is "one hundred nine million, four hundred thirty-two thousand, three hundred eighty-five".