86419897 has 2 divisors, whose sum is σ = 86419898. Its totient is φ = 86419896.

The previous prime is 86419871. The next prime is 86419939. The reversal of 86419897 is 79891468.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85174441 + 1245456 = 9229^2 + 1116^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86419897 is a prime.

It is not a weakly prime, because it can be changed into another prime (86419297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43209948 + 43209949.

It is an arithmetic number, because the mean of its divisors is an integer number (43209949).

Almost surely, 2^86419897 is an apocalyptic number.

It is an amenable number.

86419897 is a deficient number, since it is larger than the sum of its proper divisors (1).

86419897 is an equidigital number, since it uses as much as digits as its factorization.

86419897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 52.

The square root of 86419897 is about 9296.2302574753. The cubic root of 86419897 is about 442.1177129612.

The spelling of 86419897 in words is "eighty-six million, four hundred nineteen thousand, eight hundred ninety-seven".