109478 has 16 divisors (see below), whose sum is σ = 179520. Its totient is φ = 49896.

The previous prime is 109471. The next prime is 109481. The reversal of 109478 is 874901.

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

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 109478.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 109478.

It is not an unprimeable number, because it can be changed into a prime (109471) by changing a digit.

109478 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1601 + ... + 1667.

It is an arithmetic number, because the mean of its divisors is an integer number (11220).

2¹⁰⁹⁴⁷⁸ is an apocalyptic number.

109478 is a deficient number, since it is larger than the sum of its proper divisors (70042).

109478 is a wasteful number, since it uses less digits than its factorization.

109478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 109478 is about 330.8745986019. The cubic root of 109478 is about 47.8382868146.

The spelling of 109478 in words is "one hundred nine thousand, four hundred seventy-eight".