987547847 has 16 divisors (see below), whose sum is σ = 1187184768. Its totient is φ = 809434080.

The previous prime is 987547843. The next prime is 987547859. The reversal of 987547847 is 748745789.

It is not a de Polignac number, because 987547847 - 2² = 987547843 is a prime.

It is a super-2 number, since 2×987547847² = 1950501500228670818, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987547843) 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 in 15 ways as a sum of consecutive naturals, for example, 74153 + ... + 86450.

It is an arithmetic number, because the mean of its divisors is an integer number (74199048).

Almost surely, 2^987547847 is an apocalyptic number.

987547847 is a deficient number, since it is larger than the sum of its proper divisors (199636921).

987547847 is a wasteful number, since it uses less digits than its factorization.

987547847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160670.

The product of its digits is 15805440, while the sum is 59.

The square root of 987547847 is about 31425.2740163073. The cubic root of 987547847 is about 995.8319336936.

It can be divided in two parts, 98754 and 7847, that added together give a palindrome (106601).

The spelling of 987547847 in words is "nine hundred eighty-seven million, five hundred forty-seven thousand, eight hundred forty-seven".