409819005 has 12 divisors (see below), whose sum is σ = 710353020. Its totient is φ = 218570112.

The previous prime is 409818979. The next prime is 409819013. The reversal of 409819005 is 500918904.

It can be written as a sum of positive squares in 2 ways, for example, as 45887076 + 363931929 = 6774^2 + 19077^2 .

It is not a de Polignac number, because 409819005 - 2¹⁰ = 409817981 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4553500 + ... + 4553589.

It is an arithmetic number, because the mean of its divisors is an integer number (59196085).

Almost surely, 2^409819005 is an apocalyptic number.

409819005 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

409819005 is a deficient number, since it is larger than the sum of its proper divisors (300534015).

409819005 is a wasteful number, since it uses less digits than its factorization.

409819005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9107100 (or 9107097 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 409819005 is about 20243.9868849987. The cubic root of 409819005 is about 742.7865506233.

The spelling of 409819005 in words is "four hundred nine million, eight hundred nineteen thousand, five".