87299843 has 2 divisors, whose sum is σ = 87299844. Its totient is φ = 87299842.

The previous prime is 87299837. The next prime is 87299867. The reversal of 87299843 is 34899278.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87299843 - 2⁸ = 87299587 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 87299791 and 87299800.

It is not a weakly prime, because it can be changed into another prime (87299893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43649921 + 43649922.

It is an arithmetic number, because the mean of its divisors is an integer number (43649922).

Almost surely, 2^87299843 is an apocalyptic number.

87299843 is a deficient number, since it is larger than the sum of its proper divisors (1).

87299843 is an equidigital number, since it uses as much as digits as its factorization.

87299843 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 50.

The square root of 87299843 is about 9343.4384998244. The cubic root of 87299843 is about 443.6132277553.

The spelling of 87299843 in words is "eighty-seven million, two hundred ninety-nine thousand, eight hundred forty-three".