854889631 has 2 divisors, whose sum is σ = 854889632. Its totient is φ = 854889630.

The previous prime is 854889613. The next prime is 854889677. The reversal of 854889631 is 136988458.

Together with previous prime (854889613) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 854889631 - 2²³ = 846501023 is a prime.

It is a super-2 number, since 2×854889631² = 1461672562382632322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (854889601) by changing a digit.

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 as a sum of consecutive naturals, namely, 427444815 + 427444816.

It is an arithmetic number, because the mean of its divisors is an integer number (427444816).

Almost surely, 2^854889631 is an apocalyptic number.

854889631 is a deficient number, since it is larger than the sum of its proper divisors (1).

854889631 is an equidigital number, since it uses as much as digits as its factorization.

854889631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1658880, while the sum is 52.

The square root of 854889631 is about 29238.4957034386. The cubic root of 854889631 is about 949.0811544176.

The spelling of 854889631 in words is "eight hundred fifty-four million, eight hundred eighty-nine thousand, six hundred thirty-one".