853838477 has 2 divisors, whose sum is σ = 853838478. Its totient is φ = 853838476.

The previous prime is 853838467. The next prime is 853838507. The reversal of 853838477 is 774838358.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 600201001 + 253637476 = 24499^2 + 15926^2 .

It is a cyclic number.

It is not a de Polignac number, because 853838477 - 2⁸ = 853838221 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (853838417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 426919238 + 426919239.

It is an arithmetic number, because the mean of its divisors is an integer number (426919239).

Almost surely, 2^853838477 is an apocalyptic number.

It is an amenable number.

853838477 is a deficient number, since it is larger than the sum of its proper divisors (1).

853838477 is an equidigital number, since it uses as much as digits as its factorization.

853838477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4515840, while the sum is 53.

The square root of 853838477 is about 29220.5146600809. The cubic root of 853838477 is about 948.6920049167.

The spelling of 853838477 in words is "eight hundred fifty-three million, eight hundred thirty-eight thousand, four hundred seventy-seven".