9400561 has 8 divisors (see below), whose sum is σ = 9564800. Its totient is φ = 9237888.

The previous prime is 9400519. The next prime is 9400571. The reversal of 9400561 is 1650049.

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

It is a cyclic number.

It is not a de Polignac number, because 9400561 - 2⁹ = 9400049 is a prime.

It is a super-2 number, since 2×9400561² = 176741094229442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9400511) 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 7 ways as a sum of consecutive naturals, for example, 19060 + ... + 19546.

It is an arithmetic number, because the mean of its divisors is an integer number (1195600).

Almost surely, 2^9400561 is an apocalyptic number.

It is an amenable number.

9400561 is a deficient number, since it is larger than the sum of its proper divisors (164239).

9400561 is a wasteful number, since it uses less digits than its factorization.

9400561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 9400561 is about 3066.0334309984. The cubic root of 9400561 is about 211.0496278224.

The spelling of 9400561 in words is "nine million, four hundred thousand, five hundred sixty-one".