404920388419 has 2 divisors, whose sum is σ = 404920388420. Its totient is φ = 404920388418.

The previous prime is 404920388399. The next prime is 404920388449. The reversal of 404920388419 is 914883029404.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404920388419 is a prime.

It is a super-2 number, since 2×404920388419² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (404920388449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202460194209 + 202460194210.

It is an arithmetic number, because the mean of its divisors is an integer number (202460194210).

Almost surely, 2^404920388419 is an apocalyptic number.

404920388419 is a deficient number, since it is larger than the sum of its proper divisors (1).

404920388419 is an equidigital number, since it uses as much as digits as its factorization.

404920388419 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1990656, while the sum is 52.

The spelling of 404920388419 in words is "four hundred four billion, nine hundred twenty million, three hundred eighty-eight thousand, four hundred nineteen".