85858962289 has 9 divisors (see below), whose sum is σ = 87106382041. Its totient is φ = 84629169940.

The previous prime is 85858962251. The next prime is 85858962311. The reversal of 85858962289 is 98226985858.

The square root of 85858962289 is 293017.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 85858962289 - 2¹⁵ = 85858929521 is a prime.

It is a super-2 number, since 2×85858962289² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85858962089) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 20802144 + ... + 20806270.

Almost surely, 2^85858962289 is an apocalyptic number.

85858962289 is the 293017-th square number.

85858962289 is the 146509-th centered octagonal number.

It is an amenable number.

85858962289 is a deficient number, since it is larger than the sum of its proper divisors (1247419752).

85858962289 is an frugal number, since it uses more digits than its factorization.

85858962289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8396 (or 4198 counting only the distinct ones).

The product of its digits is 199065600, while the sum is 70.

The spelling of 85858962289 in words is "eighty-five billion, eight hundred fifty-eight million, nine hundred sixty-two thousand, two hundred eighty-nine".