85353769 has 2 divisors, whose sum is σ = 85353770. Its totient is φ = 85353768.

The previous prime is 85353703. The next prime is 85353791. The reversal of 85353769 is 96735358.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81667369 + 3686400 = 9037^2 + 1920^2 .

It is a cyclic number.

It is not a de Polignac number, because 85353769 - 2¹³ = 85345577 is a prime.

It is a super-2 number, since 2×85353769² = 14570531765010722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (85353799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42676884 + 42676885.

It is an arithmetic number, because the mean of its divisors is an integer number (42676885).

Almost surely, 2^85353769 is an apocalyptic number.

It is an amenable number.

85353769 is a deficient number, since it is larger than the sum of its proper divisors (1).

85353769 is an equidigital number, since it uses as much as digits as its factorization.

85353769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 46.

The square root of 85353769 is about 9238.7103537236. The cubic root of 85353769 is about 440.2921080291.

The spelling of 85353769 in words is "eighty-five million, three hundred fifty-three thousand, seven hundred sixty-nine".