398564363 has 2 divisors, whose sum is σ = 398564364. Its totient is φ = 398564362.

The previous prime is 398564357. The next prime is 398564437. The reversal of 398564363 is 363465893.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 398564363 - 2¹⁶ = 398498827 is a prime.

It is not a weakly prime, because it can be changed into another prime (398564323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199282181 + 199282182.

It is an arithmetic number, because the mean of its divisors is an integer number (199282182).

Almost surely, 2^398564363 is an apocalyptic number.

398564363 is a deficient number, since it is larger than the sum of its proper divisors (1).

398564363 is an equidigital number, since it uses as much as digits as its factorization.

398564363 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1399680, while the sum is 47.

The square root of 398564363 is about 19964.0768131161. The cubic root of 398564363 is about 735.9237543841.

The spelling of 398564363 in words is "three hundred ninety-eight million, five hundred sixty-four thousand, three hundred sixty-three".