404852394277 has 2 divisors, whose sum is σ = 404852394278. Its totient is φ = 404852394276.

The previous prime is 404852394259. The next prime is 404852394293. The reversal of 404852394277 is 772493258404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 337608643681 + 67243750596 = 581041^2 + 259314^2 .

It is a cyclic number.

It is not a de Polignac number, because 404852394277 - 2¹⁵ = 404852361509 is a prime.

It is a super-2 number, since 2×404852394277² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404852394227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202426197138 + 202426197139.

It is an arithmetic number, because the mean of its divisors is an integer number (202426197139).

Almost surely, 2^404852394277 is an apocalyptic number.

404852394277 is the 367357-th hex number.

It is an amenable number.

404852394277 is a deficient number, since it is larger than the sum of its proper divisors (1).

404852394277 is an equidigital number, since it uses as much as digits as its factorization.

404852394277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13547520, while the sum is 55.

The spelling of 404852394277 in words is "four hundred four billion, eight hundred fifty-two million, three hundred ninety-four thousand, two hundred seventy-seven".