87944911 has 2 divisors, whose sum is σ = 87944912. Its totient is φ = 87944910.

The previous prime is 87944903. The next prime is 87944917. The reversal of 87944911 is 11944978.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87944911 - 2³ = 87944903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87944917) 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, 43972455 + 43972456.

It is an arithmetic number, because the mean of its divisors is an integer number (43972456).

Almost surely, 2^87944911 is an apocalyptic number.

87944911 is a deficient number, since it is larger than the sum of its proper divisors (1).

87944911 is an equidigital number, since it uses as much as digits as its factorization.

87944911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 43.

The square root of 87944911 is about 9377.8948064051. The cubic root of 87944911 is about 444.7031829519.

The spelling of 87944911 in words is "eighty-seven million, nine hundred forty-four thousand, nine hundred eleven".