40009422 has 8 divisors (see below), whose sum is σ = 80018856. Its totient is φ = 13336472.

The previous prime is 40009391. The next prime is 40009429. The reversal of 40009422 is 22490004.

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

40009422 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40009429) 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, 3334113 + ... + 3334124.

It is an arithmetic number, because the mean of its divisors is an integer number (10002357).

Almost surely, 2^40009422 is an apocalyptic number.

40009422 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

40009422 is a wasteful number, since it uses less digits than its factorization.

40009422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6668242.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 40009422 is about 6325.3001509810. The cubic root of 40009422 is about 342.0220395495.

Adding to 40009422 its reverse (22490004), we get a palindrome (62499426).

The spelling of 40009422 in words is "forty million, nine thousand, four hundred twenty-two".