854129873 has 2 divisors, whose sum is σ = 854129874. Its totient is φ = 854129872.

The previous prime is 854129849. The next prime is 854129893. The reversal of 854129873 is 378921458.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 465566929 + 388562944 = 21577^2 + 19712^2 .

It is a cyclic number.

It is not a de Polignac number, because 854129873 - 2²⁰ = 853081297 is a prime.

It is a super-2 number, since 2×854129873² = 1459075679901992258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (854129893) 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, 427064936 + 427064937.

It is an arithmetic number, because the mean of its divisors is an integer number (427064937).

Almost surely, 2^854129873 is an apocalyptic number.

It is an amenable number.

854129873 is a deficient number, since it is larger than the sum of its proper divisors (1).

854129873 is an equidigital number, since it uses as much as digits as its factorization.

854129873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 47.

The square root of 854129873 is about 29225.5003892149. The cubic root of 854129873 is about 948.7999151053.

The spelling of 854129873 in words is "eight hundred fifty-four million, one hundred twenty-nine thousand, eight hundred seventy-three".