398012633 has 2 divisors, whose sum is σ = 398012634. Its totient is φ = 398012632.

The previous prime is 398012621. The next prime is 398012701. The reversal of 398012633 is 336210893.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 255616144 + 142396489 = 15988^2 + 11933^2 .

It is an emirp because it is prime and its reverse (336210893) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 398012633 - 2⁶ = 398012569 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 398012593 and 398012602.

It is not a weakly prime, because it can be changed into another prime (398012333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199006316 + 199006317.

It is an arithmetic number, because the mean of its divisors is an integer number (199006317).

Almost surely, 2^398012633 is an apocalyptic number.

It is an amenable number.

398012633 is a deficient number, since it is larger than the sum of its proper divisors (1).

398012633 is an equidigital number, since it uses as much as digits as its factorization.

398012633 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 398012633 is about 19950.2539582833. The cubic root of 398012633 is about 735.5840194501.

The spelling of 398012633 in words is "three hundred ninety-eight million, twelve thousand, six hundred thirty-three".