40644422 has 48 divisors (see below), whose sum is σ = 77776272. Its totient is φ = 15785280.

The previous prime is 40644421. The next prime is 40644437. The reversal of 40644422 is 22444604.

40644422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 40644391 and 40644400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40644421) 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 23 ways as a sum of consecutive naturals, for example, 77453 + ... + 77975.

It is an arithmetic number, because the mean of its divisors is an integer number (1620339).

Almost surely, 2^40644422 is an apocalyptic number.

40644422 is a deficient number, since it is larger than the sum of its proper divisors (37131850).

40644422 is a wasteful number, since it uses less digits than its factorization.

40644422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613 (or 606 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 40644422 is about 6375.2977969660. The cubic root of 40644422 is about 343.8219907843.

The spelling of 40644422 in words is "forty million, six hundred forty-four thousand, four hundred twenty-two".