854234869 has 2 divisors, whose sum is σ = 854234870. Its totient is φ = 854234868.

The previous prime is 854234837. The next prime is 854234879. The reversal of 854234869 is 968432458.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 467640625 + 386594244 = 21625^2 + 19662^2 .

It is a cyclic number.

It is not a de Polignac number, because 854234869 - 2⁵ = 854234837 is a prime.

It is a super-2 number, since 2×854234869² = 1459434422830894322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (854234809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427117434 + 427117435.

It is an arithmetic number, because the mean of its divisors is an integer number (427117435).

Almost surely, 2^854234869 is an apocalyptic number.

It is an amenable number.

854234869 is a deficient number, since it is larger than the sum of its proper divisors (1).

854234869 is an equidigital number, since it uses as much as digits as its factorization.

854234869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1658880, while the sum is 49.

The square root of 854234869 is about 29227.2966420092. The cubic root of 854234869 is about 948.8387913611.

The spelling of 854234869 in words is "eight hundred fifty-four million, two hundred thirty-four thousand, eight hundred sixty-nine".