887311987 has 2 divisors, whose sum is σ = 887311988. Its totient is φ = 887311986.

The previous prime is 887311981. The next prime is 887312029. The reversal of 887311987 is 789113788.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 887311987 - 2³ = 887311979 is a prime.

It is not a weakly prime, because it can be changed into another prime (887311981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 443655993 + 443655994.

It is an arithmetic number, because the mean of its divisors is an integer number (443655994).

Almost surely, 2^887311987 is an apocalyptic number.

887311987 is a deficient number, since it is larger than the sum of its proper divisors (1).

887311987 is an equidigital number, since it uses as much as digits as its factorization.

887311987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 677376, while the sum is 52.

The square root of 887311987 is about 29787.7825122986. The cubic root of 887311987 is about 960.9308054705.

The spelling of 887311987 in words is "eight hundred eighty-seven million, three hundred eleven thousand, nine hundred eighty-seven".