87957799 has 2 divisors, whose sum is σ = 87957800. Its totient is φ = 87957798.

The previous prime is 87957797. The next prime is 87957803. The reversal of 87957799 is 99775978.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87957799 - 2¹ = 87957797 is a prime.

Together with 87957797, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87957797) 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, 43978899 + 43978900.

It is an arithmetic number, because the mean of its divisors is an integer number (43978900).

Almost surely, 2^87957799 is an apocalyptic number.

87957799 is a deficient number, since it is larger than the sum of its proper divisors (1).

87957799 is an equidigital number, since it uses as much as digits as its factorization.

87957799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10001880, while the sum is 61.

The square root of 87957799 is about 9378.5819290552. The cubic root of 87957799 is about 444.7249050907.

The spelling of 87957799 in words is "eighty-seven million, nine hundred fifty-seven thousand, seven hundred ninety-nine".