85929997 has 2 divisors, whose sum is σ = 85929998. Its totient is φ = 85929996.

The previous prime is 85929937. The next prime is 85930003. The reversal of 85929997 is 79992958.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68740681 + 17189316 = 8291^2 + 4146^2 .

It is a cyclic number.

It is not a de Polignac number, because 85929997 - 2⁷ = 85929869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85929937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42964998 + 42964999.

It is an arithmetic number, because the mean of its divisors is an integer number (42964999).

Almost surely, 2^85929997 is an apocalyptic number.

It is an amenable number.

85929997 is a deficient number, since it is larger than the sum of its proper divisors (1).

85929997 is an equidigital number, since it uses as much as digits as its factorization.

85929997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3674160, while the sum is 58.

The square root of 85929997 is about 9269.8434183108. The cubic root of 85929997 is about 441.2806987766.

The spelling of 85929997 in words is "eighty-five million, nine hundred twenty-nine thousand, nine hundred ninety-seven".