853969 has 2 divisors, whose sum is σ = 853970. Its totient is φ = 853968.

The previous prime is 853949. The next prime is 853981. The reversal of 853969 is 969358.

853969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 846400 + 7569 = 920^2 + 87^2 .

It is a cyclic number.

It is not a de Polignac number, because 853969 - 2¹³ = 845777 is a prime.

It is a super-2 number, since 2×853969² = 1458526105922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (853949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 426984 + 426985.

It is an arithmetic number, because the mean of its divisors is an integer number (426985).

2⁸⁵³⁹⁶⁹ is an apocalyptic number.

It is an amenable number.

853969 is a deficient number, since it is larger than the sum of its proper divisors (1).

853969 is an equidigital number, since it uses as much as digits as its factorization.

853969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 40.

The square root of 853969 is about 924.1044313280. The cubic root of 853969 is about 94.8740343418.

The spelling of 853969 in words is "eight hundred fifty-three thousand, nine hundred sixty-nine".