109642394 has 8 divisors (see below), whose sum is σ = 164615220. Its totient is φ = 54770656.

The previous prime is 109642387. The next prime is 109642411. The reversal of 109642394 is 493246901.

It can be written as a sum of positive squares in 2 ways, for example, as 103327225 + 6315169 = 10165^2 + 2513^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 22499 + ... + 26934.

Almost surely, 2^109642394 is an apocalyptic number.

109642394 is a deficient number, since it is larger than the sum of its proper divisors (54972826).

109642394 is a wasteful number, since it uses less digits than its factorization.

109642394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50544.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 109642394 is about 10471.0264062316. The cubic root of 109642394 is about 478.6221976373.

The spelling of 109642394 in words is "one hundred nine million, six hundred forty-two thousand, three hundred ninety-four".