409085424 has 160 divisors (see below), whose sum is σ = 1322772480. Its totient is φ = 119923200.

The previous prime is 409085423. The next prime is 409085441. The reversal of 409085424 is 424580904.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409085423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 145924 + ... + 148700.

It is an arithmetic number, because the mean of its divisors is an integer number (8267328).

Almost surely, 2^409085424 is an apocalyptic number.

409085424 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 409085424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (661386240).

409085424 is an abundant number, since it is smaller than the sum of its proper divisors (913687056).

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

409085424 is a wasteful number, since it uses less digits than its factorization.

409085424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2836 (or 2824 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 409085424 is about 20225.8602783664. The cubic root of 409085424 is about 742.3430869316.

The spelling of 409085424 in words is "four hundred nine million, eighty-five thousand, four hundred twenty-four".