409645080 has 256 divisors, whose sum is σ = 1487808000. Its totient is φ = 99657216.

The previous prime is 409645069. The next prime is 409645081. The reversal of 409645080 is 80546904.

409645080 is a `hidden beast` number, since 4 + 0 + 9 + 645 + 0 + 8 + 0 = 666.

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 (409645081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2288431 + ... + 2288609.

It is an arithmetic number, because the mean of its divisors is an integer number (5811750).

Almost surely, 2^409645080 is an apocalyptic number.

409645080 is a gapful number since it is divisible by the number (40) 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 409645080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (743904000).

409645080 is an abundant number, since it is smaller than the sum of its proper divisors (1078162920).

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

409645080 is a wasteful number, since it uses less digits than its factorization.

409645080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375 (or 365 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 409645080 is about 20239.6907090993. The cubic root of 409645080 is about 742.6814575380.

The spelling of 409645080 in words is "four hundred nine million, six hundred forty-five thousand, eighty".