8961387 has 16 divisors (see below), whose sum is σ = 12429312. Its totient is φ = 5736960.

The previous prime is 8961383. The next prime is 8961391. The reversal of 8961387 is 7831698.

It is an interprime number because it is at equal distance from previous prime (8961383) and next prime (8961391).

It is not a de Polignac number, because 8961387 - 2² = 8961383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8961383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15243 + ... + 15819.

It is an arithmetic number, because the mean of its divisors is an integer number (776832).

Almost surely, 2^8961387 is an apocalyptic number.

8961387 is a deficient number, since it is larger than the sum of its proper divisors (3467925).

8961387 is a wasteful number, since it uses less digits than its factorization.

8961387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778.

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

The square root of 8961387 is about 2993.5575825429. The cubic root of 8961387 is about 207.7104807671.

The spelling of 8961387 in words is "eight million, nine hundred sixty-one thousand, three hundred eighty-seven".