8387961 has 8 divisors (see below), whose sum is σ = 11212320. Its totient is φ = 5577792.

The previous prime is 8387959. The next prime is 8387993. The reversal of 8387961 is 1697838.

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

It is not a de Polignac number, because 8387961 - 2¹ = 8387959 is a prime.

8387961 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8387921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2080 + ... + 4593.

It is an arithmetic number, because the mean of its divisors is an integer number (1401540).

Almost surely, 2^8387961 is an apocalyptic number.

It is an amenable number.

8387961 is a deficient number, since it is larger than the sum of its proper divisors (2824359).

8387961 is a wasteful number, since it uses less digits than its factorization.

8387961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7095.

The product of its digits is 72576, while the sum is 42.

The square root of 8387961 is about 2896.1976797173. The cubic root of 8387961 is about 203.1821106789.

The spelling of 8387961 in words is "eight million, three hundred eighty-seven thousand, nine hundred sixty-one".