409443228 has 48 divisors (see below), whose sum is σ = 1098132000. Its totient is φ = 131773824.

The previous prime is 409443197. The next prime is 409443259. The reversal of 409443228 is 822344904.

It is an interprime number because it is at equal distance from previous prime (409443197) and next prime (409443259).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 409443192 and 409443201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62233 + ... + 68496.

It is an arithmetic number, because the mean of its divisors is an integer number (22877750).

Almost surely, 2^409443228 is an apocalyptic number.

It is an amenable number.

409443228 is an abundant number, since it is smaller than the sum of its proper divisors (688688772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

409443228 is a wasteful number, since it uses less digits than its factorization.

409443228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130771 (or 130763 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 409443228 is about 20234.7035560198. The cubic root of 409443228 is about 742.5594524377.

The spelling of 409443228 in words is "four hundred nine million, four hundred forty-three thousand, two hundred twenty-eight".