398096736769 has 2 divisors, whose sum is σ = 398096736770. Its totient is φ = 398096736768.

The previous prime is 398096736757. The next prime is 398096736773. The reversal of 398096736769 is 967637690893.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 305932884544 + 92163852225 = 553112^2 + 303585^2 .

It is an emirp because it is prime and its reverse (967637690893) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 398096736769 - 2²¹ = 398094639617 is a prime.

It is a super-2 number, since 2×398096736769² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (398096736799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199048368384 + 199048368385.

It is an arithmetic number, because the mean of its divisors is an integer number (199048368385).

Almost surely, 2^398096736769 is an apocalyptic number.

It is an amenable number.

398096736769 is a deficient number, since it is larger than the sum of its proper divisors (1).

398096736769 is an equidigital number, since it uses as much as digits as its factorization.

398096736769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 555532992, while the sum is 73.

The spelling of 398096736769 in words is "three hundred ninety-eight billion, ninety-six million, seven hundred thirty-six thousand, seven hundred sixty-nine".