404256077 has 2 divisors, whose sum is σ = 404256078. Its totient is φ = 404256076.

The previous prime is 404256049. The next prime is 404256121. The reversal of 404256077 is 770652404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 227738281 + 176517796 = 15091^2 + 13286^2 .

It is a cyclic number.

It is not a de Polignac number, because 404256077 - 2¹⁶ = 404190541 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404256877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202128038 + 202128039.

It is an arithmetic number, because the mean of its divisors is an integer number (202128039).

Almost surely, 2^404256077 is an apocalyptic number.

It is an amenable number.

404256077 is a deficient number, since it is larger than the sum of its proper divisors (1).

404256077 is an equidigital number, since it uses as much as digits as its factorization.

404256077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47040, while the sum is 35.

The square root of 404256077 is about 20106.1203865888. The cubic root of 404256077 is about 739.4103392449.

The spelling of 404256077 in words is "four hundred four million, two hundred fifty-six thousand, seventy-seven".