404819 has 2 divisors, whose sum is σ = 404820. Its totient is φ = 404818.

The previous prime is 404783. The next prime is 404827. The reversal of 404819 is 918404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 404819 - 2¹² = 400723 is a prime.

It is a super-2 number, since 2×404819² = 327756845522, which contains 22 as substring.

It is a Chen prime.

It is a plaindrome in base 13.

It is not a weakly prime, because it can be changed into another prime (404849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202409 + 202410.

It is an arithmetic number, because the mean of its divisors is an integer number (202410).

2⁴⁰⁴⁸¹⁹ is an apocalyptic number.

404819 is a deficient number, since it is larger than the sum of its proper divisors (1).

404819 is an equidigital number, since it uses as much as digits as its factorization.

404819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 404819 is about 636.2538801453. The cubic root of 404819 is about 73.9753387509.

The spelling of 404819 in words is "four hundred four thousand, eight hundred nineteen".