85413689 has 2 divisors, whose sum is σ = 85413690. Its totient is φ = 85413688.

The previous prime is 85413673. The next prime is 85413737. The reversal of 85413689 is 98631458.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72931600 + 12482089 = 8540^2 + 3533^2 .

It is a cyclic number.

It is not a de Polignac number, because 85413689 - 2⁴ = 85413673 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (85413659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42706844 + 42706845.

It is an arithmetic number, because the mean of its divisors is an integer number (42706845).

Almost surely, 2^85413689 is an apocalyptic number.

It is an amenable number.

85413689 is a deficient number, since it is larger than the sum of its proper divisors (1).

85413689 is an equidigital number, since it uses as much as digits as its factorization.

85413689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 44.

The square root of 85413689 is about 9241.9526616403. The cubic root of 85413689 is about 440.3951151261.

The spelling of 85413689 in words is "eighty-five million, four hundred thirteen thousand, six hundred eighty-nine".