87816941 has 2 divisors, whose sum is σ = 87816942. Its totient is φ = 87816940.

The previous prime is 87816931. The next prime is 87816973. The reversal of 87816941 is 14961878.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87347716 + 469225 = 9346^2 + 685^2 .

It is a cyclic number.

It is not a de Polignac number, because 87816941 - 2⁶ = 87816877 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 87816892 and 87816901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87816931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43908470 + 43908471.

It is an arithmetic number, because the mean of its divisors is an integer number (43908471).

Almost surely, 2^87816941 is an apocalyptic number.

It is an amenable number.

87816941 is a deficient number, since it is larger than the sum of its proper divisors (1).

87816941 is an equidigital number, since it uses as much as digits as its factorization.

87816941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 44.

The square root of 87816941 is about 9371.0693626715. The cubic root of 87816941 is about 444.4873800859.

The spelling of 87816941 in words is "eighty-seven million, eight hundred sixteen thousand, nine hundred forty-one".