853940855 has 16 divisors (see below), whose sum is σ = 1087642080. Its totient is φ = 641405952.

The previous prime is 853940833. The next prime is 853940861. The reversal of 853940855 is 558049358.

It is a cyclic number.

It is not a de Polignac number, because 853940855 - 2¹⁴ = 853924471 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23627 + ... + 47603.

It is an arithmetic number, because the mean of its divisors is an integer number (67977630).

Almost surely, 2^853940855 is an apocalyptic number.

853940855 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

853940855 is a deficient number, since it is larger than the sum of its proper divisors (233701225).

853940855 is a wasteful number, since it uses less digits than its factorization.

853940855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24418.

The product of its (nonzero) digits is 864000, while the sum is 47.

The square root of 853940855 is about 29222.2664247659. The cubic root of 853940855 is about 948.7299204831.

It can be divided in two parts, 8539 and 40855, that added together give a palindrome (49394).

The spelling of 853940855 in words is "eight hundred fifty-three million, nine hundred forty thousand, eight hundred fifty-five".