86440799 has 2 divisors, whose sum is σ = 86440800. Its totient is φ = 86440798.

The previous prime is 86440789. The next prime is 86440817. The reversal of 86440799 is 99704468.

86440799 is nontrivially palindromic in base 14.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86440799 - 2¹² = 86436703 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86440759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43220399 + 43220400.

It is an arithmetic number, because the mean of its divisors is an integer number (43220400).

Almost surely, 2^86440799 is an apocalyptic number.

86440799 is a deficient number, since it is larger than the sum of its proper divisors (1).

86440799 is an equidigital number, since it uses as much as digits as its factorization.

86440799 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 86440799 is about 9297.3544086477. The cubic root of 86440799 is about 442.1533544428.

The spelling of 86440799 in words is "eighty-six million, four hundred forty thousand, seven hundred ninety-nine".