409208408880 has 40 divisors (see below), whose sum is σ = 1268546068272. Its totient is φ = 109122242304.

The previous prime is 409208408879. The next prime is 409208408897. The reversal of 409208408880 is 88804802904.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 852517279 + ... + 852517758.

Almost surely, 2^409208408880 is an apocalyptic number.

409208408880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

409208408880 is an abundant number, since it is smaller than the sum of its proper divisors (859337659392).

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

409208408880 is a wasteful number, since it uses less digits than its factorization.

409208408880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1705035053 (or 1705035047 counting only the distinct ones).

The product of its (nonzero) digits is 1179648, while the sum is 51.

The spelling of 409208408880 in words is "four hundred nine billion, two hundred eight million, four hundred eight thousand, eight hundred eighty".