86348221 has 2 divisors, whose sum is σ = 86348222. Its totient is φ = 86348220.

The previous prime is 86348203. The next prime is 86348239. The reversal of 86348221 is 12284368.

It is a balanced prime because it is at equal distance from previous prime (86348203) and next prime (86348239).

It can be written as a sum of positive squares in only one way, i.e., 63202500 + 23145721 = 7950^2 + 4811^2 .

It is a cyclic number.

It is not a de Polignac number, because 86348221 - 2¹³ = 86340029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86348201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43174110 + 43174111.

It is an arithmetic number, because the mean of its divisors is an integer number (43174111).

Almost surely, 2^86348221 is an apocalyptic number.

It is an amenable number.

86348221 is a deficient number, since it is larger than the sum of its proper divisors (1).

86348221 is an equidigital number, since it uses as much as digits as its factorization.

86348221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18432, while the sum is 34.

The square root of 86348221 is about 9292.3743467426. The cubic root of 86348221 is about 441.9954494730.

The spelling of 86348221 in words is "eighty-six million, three hundred forty-eight thousand, two hundred twenty-one".