109785393 has 6 divisors (see below), whose sum is σ = 158578914. Its totient is φ = 73190256.

The previous prime is 109785391. The next prime is 109785409. The reversal of 109785393 is 393587901.

It is a happy number.

109785393 is a `hidden beast` number, since 109 + 7 + 8 + 539 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 97061904 + 12723489 = 9852^2 + 3567^2 .

It is not a de Polignac number, because 109785393 - 2¹ = 109785391 is a prime.

It is not an unprimeable number, because it can be changed into a prime (109785391) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6099180 + ... + 6099197.

It is an arithmetic number, because the mean of its divisors is an integer number (26429819).

Almost surely, 2^109785393 is an apocalyptic number.

It is an amenable number.

109785393 is a deficient number, since it is larger than the sum of its proper divisors (48793521).

109785393 is a wasteful number, since it uses less digits than its factorization.

109785393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12198383 (or 12198380 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 109785393 is about 10477.8524994390. The cubic root of 109785393 is about 478.8301851980.

The spelling of 109785393 in words is "one hundred nine million, seven hundred eighty-five thousand, three hundred ninety-three".