853900854439 has 2 divisors, whose sum is σ = 853900854440. Its totient is φ = 853900854438.

The previous prime is 853900854431. The next prime is 853900854451. The reversal of 853900854439 is 934458009358.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 853900854439 - 2³ = 853900854431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (853900854431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 426950427219 + 426950427220.

It is an arithmetic number, because the mean of its divisors is an integer number (426950427220).

Almost surely, 2^853900854439 is an apocalyptic number.

853900854439 is a deficient number, since it is larger than the sum of its proper divisors (1).

853900854439 is an equidigital number, since it uses as much as digits as its factorization.

853900854439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18662400, while the sum is 58.

The spelling of 853900854439 in words is "eight hundred fifty-three billion, nine hundred million, eight hundred fifty-four thousand, four hundred thirty-nine".