87863843 has 2 divisors, whose sum is σ = 87863844. Its totient is φ = 87863842.

The previous prime is 87863833. The next prime is 87863869. The reversal of 87863843 is 34836878.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87863843 - 2¹⁸ = 87601699 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87863813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43931921 + 43931922.

It is an arithmetic number, because the mean of its divisors is an integer number (43931922).

Almost surely, 2^87863843 is an apocalyptic number.

87863843 is a deficient number, since it is larger than the sum of its proper divisors (1).

87863843 is an equidigital number, since it uses as much as digits as its factorization.

87863843 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 774144, while the sum is 47.

The square root of 87863843 is about 9373.5715178367. The cubic root of 87863843 is about 444.5664978374.

The spelling of 87863843 in words is "eighty-seven million, eight hundred sixty-three thousand, eight hundred forty-three".