40043322 has 80 divisors (see below), whose sum is σ = 102244032. Its totient is φ = 11594880.

The previous prime is 40043309. The next prime is 40043323. The reversal of 40043322 is 22334004.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 40043295 and 40043304.

It is not an unprimeable number, because it can be changed into a prime (40043323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 40498 + ... + 41474.

Almost surely, 2^40043322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40043322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51122016).

40043322 is an abundant number, since it is smaller than the sum of its proper divisors (62200710).

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

40043322 is a wasteful number, since it uses less digits than its factorization.

40043322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1025 (or 1016 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 40043322 is about 6327.9792983226. The cubic root of 40043322 is about 342.1186107521.

Adding to 40043322 its reverse (22334004), we get a palindrome (62377326).

The spelling of 40043322 in words is "forty million, forty-three thousand, three hundred twenty-two".