855179693 has 2 divisors, whose sum is σ = 855179694. Its totient is φ = 855179692.

The previous prime is 855179651. The next prime is 855179701. The reversal of 855179693 is 396971558.

855179693 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 712783204 + 142396489 = 26698^2 + 11933^2 .

It is a cyclic number.

It is not a de Polignac number, because 855179693 - 2¹² = 855175597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (855119693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427589846 + 427589847.

It is an arithmetic number, because the mean of its divisors is an integer number (427589847).

Almost surely, 2^855179693 is an apocalyptic number.

It is an amenable number.

855179693 is a deficient number, since it is larger than the sum of its proper divisors (1).

855179693 is an equidigital number, since it uses as much as digits as its factorization.

855179693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2041200, while the sum is 53.

The square root of 855179693 is about 29243.4555584664. The cubic root of 855179693 is about 949.1884825991.

The spelling of 855179693 in words is "eight hundred fifty-five million, one hundred seventy-nine thousand, six hundred ninety-three".