853228477 has 2 divisors, whose sum is σ = 853228478. Its totient is φ = 853228476.

The previous prime is 853228433. The next prime is 853228499. The reversal of 853228477 is 774822358.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 567821241 + 285407236 = 23829^2 + 16894^2 .

It is a cyclic number.

It is not a de Polignac number, because 853228477 - 2⁷ = 853228349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (853228427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 426614238 + 426614239.

It is an arithmetic number, because the mean of its divisors is an integer number (426614239).

Almost surely, 2^853228477 is an apocalyptic number.

It is an amenable number.

853228477 is a deficient number, since it is larger than the sum of its proper divisors (1).

853228477 is an equidigital number, since it uses as much as digits as its factorization.

853228477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 752640, while the sum is 46.

The square root of 853228477 is about 29210.0749228755. The cubic root of 853228477 is about 948.4660293153.

The spelling of 853228477 in words is "eight hundred fifty-three million, two hundred twenty-eight thousand, four hundred seventy-seven".