40221404 has 12 divisors (see below), whose sum is σ = 74092200. Its totient is φ = 19052208.

The previous prime is 40221403. The next prime is 40221409. The reversal of 40221404 is 40412204.

It is a super-2 number, since 2×40221404² = 3235522679462432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40221403) 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, 264539 + ... + 264690.

It is an arithmetic number, because the mean of its divisors is an integer number (6174350).

Almost surely, 2^40221404 is an apocalyptic number.

It is an amenable number.

40221404 is a deficient number, since it is larger than the sum of its proper divisors (33870796).

40221404 is a wasteful number, since it uses less digits than its factorization.

40221404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529252 (or 529250 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 40221404 is about 6342.0346892776. The cubic root of 40221404 is about 342.6250212241.

Adding to 40221404 its reverse (40412204), we get a palindrome (80633608).

The spelling of 40221404 in words is "forty million, two hundred twenty-one thousand, four hundred four".