85996789 has 2 divisors, whose sum is σ = 85996790. Its totient is φ = 85996788.

The previous prime is 85996783. The next prime is 85996837. The reversal of 85996789 is 98769958.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85710564 + 286225 = 9258^2 + 535^2 .

It is a cyclic number.

It is not a de Polignac number, because 85996789 - 2¹⁹ = 85472501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85996783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42998394 + 42998395.

It is an arithmetic number, because the mean of its divisors is an integer number (42998395).

Almost surely, 2^85996789 is an apocalyptic number.

It is an amenable number.

85996789 is a deficient number, since it is larger than the sum of its proper divisors (1).

85996789 is an equidigital number, since it uses as much as digits as its factorization.

85996789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9797760, while the sum is 61.

The square root of 85996789 is about 9273.4453683623. The cubic root of 85996789 is about 441.3950026216.

The spelling of 85996789 in words is "eighty-five million, nine hundred ninety-six thousand, seven hundred eighty-nine".