404200019 has 2 divisors, whose sum is σ = 404200020. Its totient is φ = 404200018.

The previous prime is 404200009. The next prime is 404200033. The reversal of 404200019 is 910002404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 404200019 - 2¹² = 404195923 is a prime.

It is a super-2 number, since 2×404200019² = 326755310719200722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (404200009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202100009 + 202100010.

It is an arithmetic number, because the mean of its divisors is an integer number (202100010).

Almost surely, 2^404200019 is an apocalyptic number.

404200019 is a deficient number, since it is larger than the sum of its proper divisors (1).

404200019 is an equidigital number, since it uses as much as digits as its factorization.

404200019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 404200019 is about 20104.7262851301. The cubic root of 404200019 is about 739.3761597703.

The spelling of 404200019 in words is "four hundred four million, two hundred thousand, nineteen".