86226709 has 2 divisors, whose sum is σ = 86226710. Its totient is φ = 86226708.

The previous prime is 86226697. The next prime is 86226743. The reversal of 86226709 is 90762268.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82628100 + 3598609 = 9090^2 + 1897^2 .

It is a cyclic number.

It is not a de Polignac number, because 86226709 - 2⁹ = 86226197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86226109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43113354 + 43113355.

It is an arithmetic number, because the mean of its divisors is an integer number (43113355).

Almost surely, 2^86226709 is an apocalyptic number.

It is an amenable number.

86226709 is a deficient number, since it is larger than the sum of its proper divisors (1).

86226709 is an equidigital number, since it uses as much as digits as its factorization.

86226709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 86226709 is about 9285.8337805498. The cubic root of 86226709 is about 441.7880220617.

The spelling of 86226709 in words is "eighty-six million, two hundred twenty-six thousand, seven hundred nine".