86350921 has 2 divisors, whose sum is σ = 86350922. Its totient is φ = 86350920.

The previous prime is 86350843. The next prime is 86350987. The reversal of 86350921 is 12905368.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53860921 + 32490000 = 7339^2 + 5700^2 .

It is a cyclic number.

It is not a de Polignac number, because 86350921 - 2¹⁷ = 86219849 is a prime.

It is not a weakly prime, because it can be changed into another prime (86350721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43175460 + 43175461.

It is an arithmetic number, because the mean of its divisors is an integer number (43175461).

Almost surely, 2^86350921 is an apocalyptic number.

It is an amenable number.

86350921 is a deficient number, since it is larger than the sum of its proper divisors (1).

86350921 is an equidigital number, since it uses as much as digits as its factorization.

86350921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 86350921 is about 9292.5196260218. The cubic root of 86350921 is about 442.0000563051. Note that the first 4 decimals are identical.

The spelling of 86350921 in words is "eighty-six million, three hundred fifty thousand, nine hundred twenty-one".