409128430 has 16 divisors (see below), whose sum is σ = 741731760. Its totient is φ = 162473472.

The previous prime is 409128397. The next prime is 409128431. The reversal of 409128430 is 34821904.

It is a junction number, because it is equal to n+sod(n) for n = 409128392 and 409128401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409128431) 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, 145779 + ... + 148558.

It is an arithmetic number, because the mean of its divisors is an integer number (46358235).

Almost surely, 2^409128430 is an apocalyptic number.

409128430 is a deficient number, since it is larger than the sum of its proper divisors (332603330).

409128430 is a wasteful number, since it uses less digits than its factorization.

409128430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294483.

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

The square root of 409128430 is about 20226.9233943277. The cubic root of 409128430 is about 742.3690995003.

The spelling of 409128430 in words is "four hundred nine million, one hundred twenty-eight thousand, four hundred thirty".