409775921099 has 8 divisors (see below), whose sum is σ = 434185318080. Its totient is φ = 385400405376.

The previous prime is 409775921059. The next prime is 409775921173. The reversal of 409775921099 is 990129577904.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 409775921099 - 2³² = 405480953803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (409775921059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8445404 + ... + 8493785.

It is an arithmetic number, because the mean of its divisors is an integer number (54273164760).

Almost surely, 2^409775921099 is an apocalyptic number.

409775921099 is a deficient number, since it is larger than the sum of its proper divisors (24409396981).

409775921099 is a wasteful number, since it uses less digits than its factorization.

409775921099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16940629.

The product of its (nonzero) digits is 12859560, while the sum is 62.

The spelling of 409775921099 in words is "four hundred nine billion, seven hundred seventy-five million, nine hundred twenty-one thousand, ninety-nine".