855938971 has 2 divisors, whose sum is σ = 855938972. Its totient is φ = 855938970.

The previous prime is 855938939. The next prime is 855938983. The reversal of 855938971 is 179839558.

855938971 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 is a cyclic number.

It is not a de Polignac number, because 855938971 - 2⁵ = 855938939 is a prime.

It is not a weakly prime, because it can be changed into another prime (855938371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427969485 + 427969486.

It is an arithmetic number, because the mean of its divisors is an integer number (427969486).

Almost surely, 2^855938971 is an apocalyptic number.

855938971 is a deficient number, since it is larger than the sum of its proper divisors (1).

855938971 is an equidigital number, since it uses as much as digits as its factorization.

855938971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2721600, while the sum is 55.

The square root of 855938971 is about 29256.4346939267. The cubic root of 855938971 is about 949.4693143164.

The spelling of 855938971 in words is "eight hundred fifty-five million, nine hundred thirty-eight thousand, nine hundred seventy-one".