854638547 has 12 divisors (see below), whose sum is σ = 999333576. Its totient is φ = 728743680.

The previous prime is 854638523. The next prime is 854638559. The reversal of 854638547 is 745836458.

It is not a de Polignac number, because 854638547 - 2¹⁰ = 854637523 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 854638495 and 854638504.

It is not an unprimeable number, because it can be changed into a prime (854638507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35729 + ... + 54642.

It is an arithmetic number, because the mean of its divisors is an integer number (83277798).

Almost surely, 2^854638547 is an apocalyptic number.

854638547 is a deficient number, since it is larger than the sum of its proper divisors (144695029).

854638547 is a wasteful number, since it uses less digits than its factorization.

854638547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90578 (or 90571 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 50.

The square root of 854638547 is about 29234.2016651729. The cubic root of 854638547 is about 948.9882291957.

The spelling of 854638547 in words is "eight hundred fifty-four million, six hundred thirty-eight thousand, five hundred forty-seven".