408222365 has 4 divisors (see below), whose sum is σ = 489866844. Its totient is φ = 326577888.

The previous prime is 408222361. The next prime is 408222371. The reversal of 408222365 is 563222804.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 252746404 + 155475961 = 15898^2 + 12469^2 .

It is a cyclic number.

It is not a de Polignac number, because 408222365 - 2² = 408222361 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 (408222361) 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, 40822232 + ... + 40822241.

It is an arithmetic number, because the mean of its divisors is an integer number (122466711).

Almost surely, 2^408222365 is an apocalyptic number.

It is an amenable number.

408222365 is a deficient number, since it is larger than the sum of its proper divisors (81644479).

408222365 is an equidigital number, since it uses as much as digits as its factorization.

408222365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81644478.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 408222365 is about 20204.5134809032. The cubic root of 408222365 is about 741.8206720266.

The spelling of 408222365 in words is "four hundred eight million, two hundred twenty-two thousand, three hundred sixty-five".