409340128 has 24 divisors (see below), whose sum is σ = 813719088. Its totient is φ = 202681344.

The previous prime is 409340117. The next prime is 409340143. The reversal of 409340128 is 821043904.

It is a self number, because there is not a number n which added to its sum of digits gives 409340128.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58801 + ... + 65392.

It is an arithmetic number, because the mean of its divisors is an integer number (33904962).

Almost surely, 2^409340128 is an apocalyptic number.

It is an amenable number.

409340128 is a deficient number, since it is larger than the sum of its proper divisors (404378960).

409340128 is a wasteful number, since it uses less digits than its factorization.

409340128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124306 (or 124298 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 409340128 is about 20232.1557922037. The cubic root of 409340128 is about 742.4971203885.

The spelling of 409340128 in words is "four hundred nine million, three hundred forty thousand, one hundred twenty-eight".