9561438 has 24 divisors (see below), whose sum is σ = 20800728. Its totient is φ = 3174192.

The previous prime is 9561421. The next prime is 9561443. The reversal of 9561438 is 8341659.

9561438 is a `hidden beast` number, since 9 + 5 + 614 + 38 = 666.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 4156 + ... + 6032.

It is an arithmetic number, because the mean of its divisors is an integer number (866697).

Almost surely, 2^9561438 is an apocalyptic number.

9561438 is an abundant number, since it is smaller than the sum of its proper divisors (11239290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9561438 is a wasteful number, since it uses less digits than its factorization.

9561438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2168 (or 2165 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 9561438 is about 3092.1574992228. The cubic root of 9561438 is about 212.2467608457.

It can be divided in two parts, 9561 and 438, that added together give a palindrome (9999).

The spelling of 9561438 in words is "nine million, five hundred sixty-one thousand, four hundred thirty-eight".