861785093 has 16 divisors (see below), whose sum is σ = 969346560. Its totient is φ = 760850496.

The previous prime is 861785011. The next prime is 861785101. The reversal of 861785093 is 390587168.

It is a happy number.

861785093 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 861785093 - 2⁸ = 861784837 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (861785993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13196 + ... + 43562.

It is an arithmetic number, because the mean of its divisors is an integer number (60584160).

Almost surely, 2^861785093 is an apocalyptic number.

It is an amenable number.

861785093 is a deficient number, since it is larger than the sum of its proper divisors (107561467).

861785093 is a wasteful number, since it uses less digits than its factorization.

861785093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30476.

The product of its (nonzero) digits is 362880, while the sum is 47.

The square root of 861785093 is about 29356.1764029310. The cubic root of 861785093 is about 951.6260583981.

The spelling of 861785093 in words is "eight hundred sixty-one million, seven hundred eighty-five thousand, ninety-three".