87944123 has 2 divisors, whose sum is σ = 87944124. Its totient is φ = 87944122.

The previous prime is 87944089. The next prime is 87944147. The reversal of 87944123 is 32144978.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87944123 - 2²⁰ = 86895547 is a prime.

It is not a weakly prime, because it can be changed into another prime (87944023) 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, 43972061 + 43972062.

It is an arithmetic number, because the mean of its divisors is an integer number (43972062).

Almost surely, 2^87944123 is an apocalyptic number.

87944123 is a deficient number, since it is larger than the sum of its proper divisors (1).

87944123 is an equidigital number, since it uses as much as digits as its factorization.

87944123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 38.

The square root of 87944123 is about 9377.8527926173. The cubic root of 87944123 is about 444.7018547449.

The spelling of 87944123 in words is "eighty-seven million, nine hundred forty-four thousand, one hundred twenty-three".