86490297 has 6 divisors (see below), whose sum is σ = 124930442. Its totient is φ = 57660192.

The previous prime is 86490277. The next prime is 86490311. The reversal of 86490297 is 79209468.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 77633721 + 8856576 = 8811^2 + 2976^2 .

It is a de Polignac number, because none of the positive numbers 2^k-86490297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86490247) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4805008 + ... + 4805025.

Almost surely, 2^86490297 is an apocalyptic number.

It is an amenable number.

86490297 is a deficient number, since it is larger than the sum of its proper divisors (38440145).

86490297 is a wasteful number, since it uses less digits than its factorization.

86490297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9610039 (or 9610036 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 86490297 is about 9300.0159677282. The cubic root of 86490297 is about 442.2377340833.

The spelling of 86490297 in words is "eighty-six million, four hundred ninety thousand, two hundred ninety-seven".