409812480 has 720 divisors, whose sum is σ = 1861287120. Its totient is φ = 85155840.

The previous prime is 409812479. The next prime is 409812503. The reversal of 409812480 is 84218904.

409812480 is a `hidden beast` number, since 409 + 8 + 1 + 248 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 37255675 + ... + 37255685.

It is an arithmetic number, because the mean of its divisors is an integer number (2585121).

Almost surely, 2^409812480 is an apocalyptic number.

409812480 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 409812480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (930643560).

409812480 is an abundant number, since it is smaller than the sum of its proper divisors (1451474640).

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

409812480 is a wasteful number, since it uses less digits than its factorization.

409812480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68 (or 28 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 409812480 is about 20243.8257253909. The cubic root of 409812480 is about 742.7826084700.

The spelling of 409812480 in words is "four hundred nine million, eight hundred twelve thousand, four hundred eighty".