8406961 has 4 divisors (see below), whose sum is σ = 8421732. Its totient is φ = 8392192.

The previous prime is 8406941. The next prime is 8406967. The reversal of 8406961 is 1696048.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7317025 + 1089936 = 2705^2 + 1044^2 .

It is a cyclic number.

It is not a de Polignac number, because 8406961 - 2¹³ = 8398769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8406967) 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, 6496 + ... + 7681.

It is an arithmetic number, because the mean of its divisors is an integer number (2105433).

Almost surely, 2^8406961 is an apocalyptic number.

It is an amenable number.

8406961 is a deficient number, since it is larger than the sum of its proper divisors (14771).

8406961 is a wasteful number, since it uses less digits than its factorization.

8406961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14770.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 8406961 is about 2899.4759871397. The cubic root of 8406961 is about 203.3354077247.

The spelling of 8406961 in words is "eight million, four hundred six thousand, nine hundred sixty-one".