86944213 has 2 divisors, whose sum is σ = 86944214. Its totient is φ = 86944212.

The previous prime is 86944211. The next prime is 86944259. The reversal of 86944213 is 31244968.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72029169 + 14915044 = 8487^2 + 3862^2 .

It is a cyclic number.

It is not a de Polignac number, because 86944213 - 2¹ = 86944211 is a prime.

Together with 86944211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86944211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43472106 + 43472107.

It is an arithmetic number, because the mean of its divisors is an integer number (43472107).

Almost surely, 2^86944213 is an apocalyptic number.

It is an amenable number.

86944213 is a deficient number, since it is larger than the sum of its proper divisors (1).

86944213 is an equidigital number, since it uses as much as digits as its factorization.

86944213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 37.

The square root of 86944213 is about 9324.3880764370. The cubic root of 86944213 is about 443.0100312465.

The spelling of 86944213 in words is "eighty-six million, nine hundred forty-four thousand, two hundred thirteen".