109779394 has 16 divisors (see below), whose sum is σ = 166171320. Its totient is φ = 54391680.

The previous prime is 109779361. The next prime is 109779403. The reversal of 109779394 is 493977901.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 99301225 + 10478169 = 9965^2 + 3237^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128272 + ... + 129124.

Almost surely, 2^109779394 is an apocalyptic number.

109779394 is a deficient number, since it is larger than the sum of its proper divisors (56391926).

109779394 is a wasteful number, since it uses less digits than its factorization.

109779394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1365.

The product of its (nonzero) digits is 428652, while the sum is 49.

The square root of 109779394 is about 10477.5662250353. The cubic root of 109779394 is about 478.8214634712.

The spelling of 109779394 in words is "one hundred nine million, seven hundred seventy-nine thousand, three hundred ninety-four".