398268583 has 2 divisors, whose sum is σ = 398268584. Its totient is φ = 398268582.

The previous prime is 398268523. The next prime is 398268587. The reversal of 398268583 is 385862893.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 398268583 - 2²¹ = 396171431 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 398268583.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (398268587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199134291 + 199134292.

It is an arithmetic number, because the mean of its divisors is an integer number (199134292).

Almost surely, 2^398268583 is an apocalyptic number.

398268583 is a deficient number, since it is larger than the sum of its proper divisors (1).

398268583 is an equidigital number, since it uses as much as digits as its factorization.

398268583 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2488320, while the sum is 52.

The square root of 398268583 is about 19956.6676326485. The cubic root of 398268583 is about 735.7416630113.

The spelling of 398268583 in words is "three hundred ninety-eight million, two hundred sixty-eight thousand, five hundred eighty-three".