398826207077 has 2 divisors, whose sum is σ = 398826207078. Its totient is φ = 398826207076.

The previous prime is 398826207071. The next prime is 398826207083. The reversal of 398826207077 is 770702628893.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (398826207071) and next prime (398826207083).

It can be written as a sum of positive squares in only one way, i.e., 397808979841 + 1017227236 = 630721^2 + 31894^2 .

It is a cyclic number.

It is not a de Polignac number, because 398826207077 - 2¹⁶ = 398826141541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (398826207071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199413103538 + 199413103539.

It is an arithmetic number, because the mean of its divisors is an integer number (199413103539).

Almost surely, 2^398826207077 is an apocalyptic number.

It is an amenable number.

398826207077 is a deficient number, since it is larger than the sum of its proper divisors (1).

398826207077 is an equidigital number, since it uses as much as digits as its factorization.

398826207077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14224896, while the sum is 59.

The spelling of 398826207077 in words is "three hundred ninety-eight billion, eight hundred twenty-six million, two hundred seven thousand, seventy-seven".