854129851 has 4 divisors (see below), whose sum is σ = 854229832. Its totient is φ = 854029872.

The previous prime is 854129849. The next prime is 854129873. The reversal of 854129851 is 158921458.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 158921458 = 2 ⋅79460729.

It is a cyclic number.

It is not a de Polignac number, because 854129851 - 2¹ = 854129849 is a prime.

It is the 29226-th Hogben number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 854129798 and 854129807.

It is not an unprimeable number, because it can be changed into a prime (854129051) by changing a digit.

It is a nontrivial repunit in base 29225.

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 3 ways as a sum of consecutive naturals, for example, 35841 + ... + 54706.

It is an arithmetic number, because the mean of its divisors is an integer number (213557458).

Almost surely, 2^854129851 is an apocalyptic number.

854129851 is a deficient number, since it is larger than the sum of its proper divisors (99981).

854129851 is an equidigital number, since it uses as much as digits as its factorization.

854129851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99980.

The product of its digits is 115200, while the sum is 43.

The square root of 854129851 is about 29225.5000128313. The cubic root of 854129851 is about 948.7999069592.

The spelling of 854129851 in words is "eight hundred fifty-four million, one hundred twenty-nine thousand, eight hundred fifty-one".