86449619 has 2 divisors, whose sum is σ = 86449620. Its totient is φ = 86449618.

The previous prime is 86449579. The next prime is 86449673. The reversal of 86449619 is 91694468.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86449619 - 2²⁴ = 69672403 is a prime.

It is a super-2 number, since 2×86449619² = 14947073250490322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (86449679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43224809 + 43224810.

It is an arithmetic number, because the mean of its divisors is an integer number (43224810).

Almost surely, 2^86449619 is an apocalyptic number.

86449619 is a deficient number, since it is larger than the sum of its proper divisors (1).

86449619 is an equidigital number, since it uses as much as digits as its factorization.

86449619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 373248, while the sum is 47.

The square root of 86449619 is about 9297.8287250304. The cubic root of 86449619 is about 442.1683923261.

The spelling of 86449619 in words is "eighty-six million, four hundred forty-nine thousand, six hundred nineteen".