398064943 has 2 divisors, whose sum is σ = 398064944. Its totient is φ = 398064942.

The previous prime is 398064899. The next prime is 398064959. The reversal of 398064943 is 349460893.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 398064943 - 2¹⁷ = 397933871 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 398064893 and 398064902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (398064983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199032471 + 199032472.

It is an arithmetic number, because the mean of its divisors is an integer number (199032472).

Almost surely, 2^398064943 is an apocalyptic number.

398064943 is a deficient number, since it is larger than the sum of its proper divisors (1).

398064943 is an equidigital number, since it uses as much as digits as its factorization.

398064943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 559872, while the sum is 46.

The square root of 398064943 is about 19951.5649260904. The cubic root of 398064943 is about 735.6162434812.

The spelling of 398064943 in words is "three hundred ninety-eight million, sixty-four thousand, nine hundred forty-three".