109478445 has 32 divisors (see below), whose sum is σ = 178606080. Its totient is φ = 57254400.

The previous prime is 109478431. The next prime is 109478471. The reversal of 109478445 is 544874901.

It is not a de Polignac number, because 109478445 - 2⁴ = 109478429 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 109478397 and 109478406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 192121 + ... + 192689.

It is an arithmetic number, because the mean of its divisors is an integer number (5581440).

Almost surely, 2^109478445 is an apocalyptic number.

109478445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

109478445 is a deficient number, since it is larger than the sum of its proper divisors (69127635).

109478445 is a wasteful number, since it uses less digits than its factorization.

109478445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805.

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 109478445 is about 10463.1947797984. The cubic root of 109478445 is about 478.3835163134.

The spelling of 109478445 in words is "one hundred nine million, four hundred seventy-eight thousand, four hundred forty-five".