398747473 has 2 divisors, whose sum is σ = 398747474. Its totient is φ = 398747472.

The previous prime is 398747467. The next prime is 398747497. The reversal of 398747473 is 374747893.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 378380304 + 20367169 = 19452^2 + 4513^2 .

It is a cyclic number.

It is not a de Polignac number, because 398747473 - 2⁵ = 398747441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 398747473.

It is not a weakly prime, because it can be changed into another prime (398747413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199373736 + 199373737.

It is an arithmetic number, because the mean of its divisors is an integer number (199373737).

Almost surely, 2^398747473 is an apocalyptic number.

It is an amenable number.

398747473 is a deficient number, since it is larger than the sum of its proper divisors (1).

398747473 is an equidigital number, since it uses as much as digits as its factorization.

398747473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3556224, while the sum is 52.

The square root of 398747473 is about 19968.6622736727. The cubic root of 398747473 is about 736.0364374535.

The spelling of 398747473 in words is "three hundred ninety-eight million, seven hundred forty-seven thousand, four hundred seventy-three".