987947007 has 4 divisors (see below), whose sum is σ = 1317262680. Its totient is φ = 658631336.

The previous prime is 987946997. The next prime is 987947017. The reversal of 987947007 is 700749789.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 700749789 = 3 ⋅233583263.

It is an interprime number because it is at equal distance from previous prime (987946997) and next prime (987947017).

It is a cyclic number.

It is not a de Polignac number, because 987947007 - 2¹⁹ = 987422719 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987947017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164657832 + ... + 164657837.

It is an arithmetic number, because the mean of its divisors is an integer number (329315670).

Almost surely, 2^987947007 is an apocalyptic number.

987947007 is a deficient number, since it is larger than the sum of its proper divisors (329315673).

987947007 is a wasteful number, since it uses less digits than its factorization.

987947007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329315672.

The product of its (nonzero) digits is 889056, while the sum is 51.

The square root of 987947007 is about 31431.6243137385. The cubic root of 987947007 is about 995.9660850777.

The spelling of 987947007 in words is "nine hundred eighty-seven million, nine hundred forty-seven thousand, seven".