86244919 has 2 divisors, whose sum is σ = 86244920. Its totient is φ = 86244918.

The previous prime is 86244881. The next prime is 86244923. The reversal of 86244919 is 91944268.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86244919 - 2⁹ = 86244407 is a prime.

It is a super-2 number, since 2×86244919² = 14876372106633122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86244929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43122459 + 43122460.

It is an arithmetic number, because the mean of its divisors is an integer number (43122460).

Almost surely, 2^86244919 is an apocalyptic number.

86244919 is a deficient number, since it is larger than the sum of its proper divisors (1).

86244919 is an equidigital number, since it uses as much as digits as its factorization.

86244919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 43.

The square root of 86244919 is about 9286.8142546301. The cubic root of 86244919 is about 441.8191199033.

The spelling of 86244919 in words is "eighty-six million, two hundred forty-four thousand, nine hundred nineteen".