86442299 has 2 divisors, whose sum is σ = 86442300. Its totient is φ = 86442298.

The previous prime is 86442253. The next prime is 86442313. The reversal of 86442299 is 99224468.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86442299 - 2¹² = 86438203 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (86442899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43221149 + 43221150.

It is an arithmetic number, because the mean of its divisors is an integer number (43221150).

Almost surely, 2^86442299 is an apocalyptic number.

86442299 is a deficient number, since it is larger than the sum of its proper divisors (1).

86442299 is an equidigital number, since it uses as much as digits as its factorization.

86442299 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 44.

The square root of 86442299 is about 9297.4350764068. The cubic root of 86442299 is about 442.1559119781.

The spelling of 86442299 in words is "eighty-six million, four hundred forty-two thousand, two hundred ninety-nine".