408221443 has 8 divisors (see below), whose sum is σ = 466661888. Its totient is φ = 349811784.

The previous prime is 408221431. The next prime is 408221447. The reversal of 408221443 is 344122804.

It is a happy number.

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

It is not a de Polignac number, because 408221443 - 2⁹ = 408220931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (408221447) 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, 43030 + ... + 51652.

It is an arithmetic number, because the mean of its divisors is an integer number (58332736).

Almost surely, 2^408221443 is an apocalyptic number.

408221443 is a deficient number, since it is larger than the sum of its proper divisors (58440445).

408221443 is an equidigital number, since it uses as much as digits as its factorization.

408221443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15393.

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 408221443 is about 20204.4906642063. The cubic root of 408221443 is about 741.8201135408.

The spelling of 408221443 in words is "four hundred eight million, two hundred twenty-one thousand, four hundred forty-three".