8009961 has 4 divisors (see below), whose sum is σ = 10679952. Its totient is φ = 5339972.

The previous prime is 8009959. The next prime is 8009977. The reversal of 8009961 is 1699008.

It is a happy number.

8009961 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8009961 - 2¹ = 8009959 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8009951) 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 3 ways as a sum of consecutive naturals, for example, 1334991 + ... + 1334996.

It is an arithmetic number, because the mean of its divisors is an integer number (2669988).

Almost surely, 2^8009961 is an apocalyptic number.

It is an amenable number.

8009961 is a deficient number, since it is larger than the sum of its proper divisors (2669991).

8009961 is a wasteful number, since it uses less digits than its factorization.

8009961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2669990.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 8009961 is about 2830.1874496224. The cubic root of 8009961 is about 200.0829739052.

The spelling of 8009961 in words is "eight million, nine thousand, nine hundred sixty-one".