86499397 has 2 divisors, whose sum is σ = 86499398. Its totient is φ = 86499396.

The previous prime is 86499341. The next prime is 86499407. The reversal of 86499397 is 79399468.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51854401 + 34644996 = 7201^2 + 5886^2 .

86499397 is a truncatable prime.

It is a cyclic number.

It is not a de Polignac number, because 86499397 - 2¹⁵ = 86466629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86499337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43249698 + 43249699.

It is an arithmetic number, because the mean of its divisors is an integer number (43249699).

Almost surely, 2^86499397 is an apocalyptic number.

It is an amenable number.

86499397 is a deficient number, since it is larger than the sum of its proper divisors (1).

86499397 is an equidigital number, since it uses as much as digits as its factorization.

86499397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2939328, while the sum is 55.

The square root of 86499397 is about 9300.5052013318. The cubic root of 86499397 is about 442.2532434233.

The spelling of 86499397 in words is "eighty-six million, four hundred ninety-nine thousand, three hundred ninety-seven".