85888769 has 2 divisors, whose sum is σ = 85888770. Its totient is φ = 85888768.

The previous prime is 85888763. The next prime is 85888799. The reversal of 85888769 is 96788858.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62220544 + 23668225 = 7888^2 + 4865^2 .

It is a cyclic number.

It is not a de Polignac number, because 85888769 - 2⁸ = 85888513 is a prime.

It is a super-2 number, since 2×85888769² = 14753761280670722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (85888763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42944384 + 42944385.

It is an arithmetic number, because the mean of its divisors is an integer number (42944385).

Almost surely, 2^85888769 is an apocalyptic number.

It is an amenable number.

85888769 is a deficient number, since it is larger than the sum of its proper divisors (1).

85888769 is an equidigital number, since it uses as much as digits as its factorization.

85888769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7741440, while the sum is 59.

The square root of 85888769 is about 9267.6193814809. The cubic root of 85888769 is about 441.2101140695.

The spelling of 85888769 in words is "eighty-five million, eight hundred eighty-eight thousand, seven hundred sixty-nine".