396144077477 has 2 divisors, whose sum is σ = 396144077478. Its totient is φ = 396144077476.

The previous prime is 396144077449. The next prime is 396144077561. The reversal of 396144077477 is 774770441693.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 395809589956 + 334487521 = 629134^2 + 18289^2 .

It is a cyclic number.

It is not a de Polignac number, because 396144077477 - 2¹⁰ = 396144076453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (396144077177) 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, 198072038738 + 198072038739.

It is an arithmetic number, because the mean of its divisors is an integer number (198072038739).

Almost surely, 2^396144077477 is an apocalyptic number.

It is an amenable number.

396144077477 is a deficient number, since it is larger than the sum of its proper divisors (1).

396144077477 is an equidigital number, since it uses as much as digits as its factorization.

396144077477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24893568, while the sum is 59.

The spelling of 396144077477 in words is "three hundred ninety-six billion, one hundred forty-four million, seventy-seven thousand, four hundred seventy-seven".