398766367 has 2 divisors, whose sum is σ = 398766368. Its totient is φ = 398766366.

The previous prime is 398766359. The next prime is 398766421. The reversal of 398766367 is 763667893.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 398766367 - 2³ = 398766359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (398760367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199383183 + 199383184.

It is an arithmetic number, because the mean of its divisors is an integer number (199383184).

Almost surely, 2^398766367 is an apocalyptic number.

398766367 is a deficient number, since it is larger than the sum of its proper divisors (1).

398766367 is an equidigital number, since it uses as much as digits as its factorization.

398766367 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6858432, while the sum is 55.

The square root of 398766367 is about 19969.1353593489. The cubic root of 398766367 is about 736.0480625661.

The spelling of 398766367 in words is "three hundred ninety-eight million, seven hundred sixty-six thousand, three hundred sixty-seven".