85905222469 has 4 divisors (see below), whose sum is σ = 93714788160. Its totient is φ = 78095656780.

The previous prime is 85905222461. The next prime is 85905222497. The reversal of 85905222469 is 96422250958.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85905222469 - 2³ = 85905222461 is a prime.

It is a super-2 number, since 2×85905222469² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85905222461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3904782829 + ... + 3904782850.

It is an arithmetic number, because the mean of its divisors is an integer number (23428697040).

Almost surely, 2^85905222469 is an apocalyptic number.

It is an amenable number.

85905222469 is a deficient number, since it is larger than the sum of its proper divisors (7809565691).

85905222469 is a wasteful number, since it uses less digits than its factorization.

85905222469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7809565690.

The product of its (nonzero) digits is 3110400, while the sum is 52.

The spelling of 85905222469 in words is "eighty-five billion, nine hundred five million, two hundred twenty-two thousand, four hundred sixty-nine".