86344549 has 2 divisors, whose sum is σ = 86344550. Its totient is φ = 86344548.

The previous prime is 86344537. The next prime is 86344663. The reversal of 86344549 is 94544368.

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., 75168900 + 11175649 = 8670^2 + 3343^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86344549 is a prime.

It is a super-2 number, since 2×86344549² = 14910762284026802, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86344519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43172274 + 43172275.

It is an arithmetic number, because the mean of its divisors is an integer number (43172275).

Almost surely, 2^86344549 is an apocalyptic number.

It is an amenable number.

86344549 is a deficient number, since it is larger than the sum of its proper divisors (1).

86344549 is an equidigital number, since it uses as much as digits as its factorization.

86344549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 414720, while the sum is 43.

The square root of 86344549 is about 9292.1767632778. The cubic root of 86344549 is about 441.9891840272.

The spelling of 86344549 in words is "eighty-six million, three hundred forty-four thousand, five hundred forty-nine".