40343221 has 8 divisors (see below), whose sum is σ = 41630400. Its totient is φ = 39070560.

The previous prime is 40343207. The next prime is 40343239. The reversal of 40343221 is 12234304.

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 40343221 - 2¹¹ = 40341173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40343291) 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, 2160 + ... + 9238.

It is an arithmetic number, because the mean of its divisors is an integer number (5203800).

Almost surely, 2^40343221 is an apocalyptic number.

40343221 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

40343221 is a deficient number, since it is larger than the sum of its proper divisors (1287179).

40343221 is a wasteful number, since it uses less digits than its factorization.

40343221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7259.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 40343221 is about 6351.6313652478. The cubic root of 40343221 is about 342.9705709606.

Adding to 40343221 its reverse (12234304), we get a palindrome (52577525).

The spelling of 40343221 in words is "forty million, three hundred forty-three thousand, two hundred twenty-one".