853954725447 has 6 divisors (see below), whose sum is σ = 1233490158992. Its totient is φ = 569303150292.

The previous prime is 853954725433. The next prime is 853954725451. The reversal of 853954725447 is 744527459358.

It is a happy number.

853954725447 is a `hidden beast` number, since 8 + 5 + 39 + 54 + 7 + 2 + 544 + 7 = 666.

853954725447 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 853954725447 - 2⁸ = 853954725191 is a prime.

It is a super-2 number, since 2×853954725447² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (853954725467) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 47441929183 + ... + 47441929200.

Almost surely, 2^853954725447 is an apocalyptic number.

853954725447 is a deficient number, since it is larger than the sum of its proper divisors (379535433545).

853954725447 is a wasteful number, since it uses less digits than its factorization.

853954725447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94883858389 (or 94883858386 counting only the distinct ones).

The product of its digits is 169344000, while the sum is 63.

The spelling of 853954725447 in words is "eight hundred fifty-three billion, nine hundred fifty-four million, seven hundred twenty-five thousand, four hundred forty-seven".