987940747 has 8 divisors (see below), whose sum is σ = 998585856. Its totient is φ = 977340672.

The previous prime is 987940717. The next prime is 987940753. The reversal of 987940747 is 747049789.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 987940747 - 2¹⁵ = 987907979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (987940717) 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 7 ways as a sum of consecutive naturals, for example, 33813 + ... + 55849.

It is an arithmetic number, because the mean of its divisors is an integer number (124823232).

Almost surely, 2^987940747 is an apocalyptic number.

987940747 is a deficient number, since it is larger than the sum of its proper divisors (10645109).

987940747 is a wasteful number, since it uses less digits than its factorization.

987940747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22517.

The product of its (nonzero) digits is 3556224, while the sum is 55.

The square root of 987940747 is about 31431.5247323448. The cubic root of 987940747 is about 995.9639814693.

The spelling of 987940747 in words is "nine hundred eighty-seven million, nine hundred forty thousand, seven hundred forty-seven".