409899943849 has 8 divisors (see below), whose sum is σ = 451773510048. Its totient is φ = 368794700160.

The previous prime is 409899943837. The next prime is 409899943853. The reversal of 409899943849 is 948349998904.

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 409899943849 - 2¹⁹ = 409899419561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (409899941849) 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, 192079507 + ... + 192081640.

It is an arithmetic number, because the mean of its divisors is an integer number (56471688756).

Almost surely, 2^409899943849 is an apocalyptic number.

It is an amenable number.

409899943849 is a deficient number, since it is larger than the sum of its proper divisors (41873566199).

409899943849 is a wasteful number, since it uses less digits than its factorization.

409899943849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384161255.

The product of its (nonzero) digits is 725594112, while the sum is 76.

The spelling of 409899943849 in words is "four hundred nine billion, eight hundred ninety-nine million, nine hundred forty-three thousand, eight hundred forty-nine".