409594020 has 192 divisors, whose sum is σ = 1335398400. Its totient is φ = 92759040.

The previous prime is 409594013. The next prime is 409594027. The reversal of 409594020 is 20495904.

It is an interprime number because it is at equal distance from previous prime (409594013) and next prime (409594027).

It is a super-2 number, since 2×409594020² = 335534522439520800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (409594027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1115877 + ... + 1116243.

It is an arithmetic number, because the mean of its divisors is an integer number (6955200).

Almost surely, 2^409594020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 409594020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (667699200).

409594020 is an abundant number, since it is smaller than the sum of its proper divisors (925804380).

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

409594020 is a wasteful number, since it uses less digits than its factorization.

409594020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498 (or 496 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 409594020 is about 20238.4292868790. The cubic root of 409594020 is about 742.6505992067.

The spelling of 409594020 in words is "four hundred nine million, five hundred ninety-four thousand, twenty".