408117221 has 8 divisors (see below), whose sum is σ = 428072640. Its totient is φ = 388346112.

The previous prime is 408117211. The next prime is 408117233. The reversal of 408117221 is 122711804.

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 408117221 - 2²² = 403922917 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408117211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41531 + ... + 50408.

It is an arithmetic number, because the mean of its divisors is an integer number (53509080).

Almost surely, 2^408117221 is an apocalyptic number.

It is an amenable number.

408117221 is a deficient number, since it is larger than the sum of its proper divisors (19955419).

408117221 is a wasteful number, since it uses less digits than its factorization.

408117221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92155.

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 408117221 is about 20201.9113204667. The cubic root of 408117221 is about 741.7569774188.

The spelling of 408117221 in words is "four hundred eight million, one hundred seventeen thousand, two hundred twenty-one".