40221344 has 12 divisors (see below), whose sum is σ = 79185834. Its totient is φ = 20110656.

The previous prime is 40221343. The next prime is 40221361. The reversal of 40221344 is 44312204.

It can be written as a sum of positive squares in only one way, i.e., 37699600 + 2521744 = 6140^2 + 1588^2 .

It is not an unprimeable number, because it can be changed into a prime (40221343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 628427 + ... + 628490.

Almost surely, 2^40221344 is an apocalyptic number.

It is an amenable number.

40221344 is a deficient number, since it is larger than the sum of its proper divisors (38964490).

40221344 is a wasteful number, since it uses less digits than its factorization.

40221344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256927 (or 1256919 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 40221344 is about 6342.0299589327. The cubic root of 40221344 is about 342.6248508545.

Adding to 40221344 its reverse (44312204), we get a palindrome (84533548).

The spelling of 40221344 in words is "forty million, two hundred twenty-one thousand, three hundred forty-four".