40438922 has 16 divisors (see below), whose sum is σ = 64245312. Its totient is φ = 19050240.

The previous prime is 40438889. The next prime is 40438927. The reversal of 40438922 is 22983404.

It is not an unprimeable number, because it can be changed into a prime (40438927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3479 + ... + 9642.

It is an arithmetic number, because the mean of its divisors is an integer number (4015332).

Almost surely, 2^40438922 is an apocalyptic number.

40438922 is a deficient number, since it is larger than the sum of its proper divisors (23806390).

40438922 is a wasteful number, since it uses less digits than its factorization.

40438922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13213.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 40438922 is about 6359.1604791828. The cubic root of 40438922 is about 343.2415516965.

The spelling of 40438922 in words is "forty million, four hundred thirty-eight thousand, nine hundred twenty-two".