87888971 has 2 divisors, whose sum is σ = 87888972. Its totient is φ = 87888970.

The previous prime is 87888967. The next prime is 87888979. The reversal of 87888971 is 17988878.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87888971 - 2² = 87888967 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87888979) 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, 43944485 + 43944486.

It is an arithmetic number, because the mean of its divisors is an integer number (43944486).

Almost surely, 2^87888971 is an apocalyptic number.

87888971 is a deficient number, since it is larger than the sum of its proper divisors (1).

87888971 is an equidigital number, since it uses as much as digits as its factorization.

87888971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1806336, while the sum is 56.

The square root of 87888971 is about 9374.9117862516. The cubic root of 87888971 is about 444.6088740179.

The spelling of 87888971 in words is "eighty-seven million, eight hundred eighty-eight thousand, nine hundred seventy-one".