86995829 has 2 divisors, whose sum is σ = 86995830. Its totient is φ = 86995828.

The previous prime is 86995789. The next prime is 86995841. The reversal of 86995829 is 92859968.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85063729 + 1932100 = 9223^2 + 1390^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86995829 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86995849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43497914 + 43497915.

It is an arithmetic number, because the mean of its divisors is an integer number (43497915).

Almost surely, 2^86995829 is an apocalyptic number.

It is an amenable number.

86995829 is a deficient number, since it is larger than the sum of its proper divisors (1).

86995829 is an equidigital number, since it uses as much as digits as its factorization.

86995829 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2799360, while the sum is 56.

The square root of 86995829 is about 9327.1554613398. The cubic root of 86995829 is about 443.0976808686.

The spelling of 86995829 in words is "eighty-six million, nine hundred ninety-five thousand, eight hundred twenty-nine".