8961971 has 4 divisors (see below), whose sum is σ = 8988000. Its totient is φ = 8935944.

The previous prime is 8961961. The next prime is 8961983. The reversal of 8961971 is 1791698.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8961971 - 2¹⁸ = 8699827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8961961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12491 + ... + 13188.

It is an arithmetic number, because the mean of its divisors is an integer number (2247000).

Almost surely, 2^8961971 is an apocalyptic number.

8961971 is a deficient number, since it is larger than the sum of its proper divisors (26029).

8961971 is a wasteful number, since it uses less digits than its factorization.

8961971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26028.

The product of its digits is 27216, while the sum is 41.

The square root of 8961971 is about 2993.6551237576. The cubic root of 8961971 is about 207.7149927281.

The spelling of 8961971 in words is "eight million, nine hundred sixty-one thousand, nine hundred seventy-one".