40412221 has 8 divisors (see below), whose sum is σ = 42962400. Its totient is φ = 37904400.

The previous prime is 40412209. The next prime is 40412231. The reversal of 40412221 is 12221404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40412221 - 2⁷ = 40412093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40412195 and 40412204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40412231) 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, 8611 + ... + 12448.

It is an arithmetic number, because the mean of its divisors is an integer number (5370300).

Almost surely, 2^40412221 is an apocalyptic number.

It is an amenable number.

40412221 is a deficient number, since it is larger than the sum of its proper divisors (2550179).

40412221 is a wasteful number, since it uses less digits than its factorization.

40412221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21179.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 40412221 is about 6357.0607201756. The cubic root of 40412221 is about 343.1659899184.

Adding to 40412221 its reverse (12221404), we get a palindrome (52633625).

It can be divided in two parts, 404 and 12221, that multiplied together give a square (4937284 = 2222²).

The spelling of 40412221 in words is "forty million, four hundred twelve thousand, two hundred twenty-one".