398012413 has 2 divisors, whose sum is σ = 398012414. Its totient is φ = 398012412.

The previous prime is 398012393. The next prime is 398012423. The reversal of 398012413 is 314210893.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 367949124 + 30063289 = 19182^2 + 5483^2 .

It is an emirp because it is prime and its reverse (314210893) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-398012413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (398012423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199006206 + 199006207.

It is an arithmetic number, because the mean of its divisors is an integer number (199006207).

Almost surely, 2^398012413 is an apocalyptic number.

It is an amenable number.

398012413 is a deficient number, since it is larger than the sum of its proper divisors (1).

398012413 is an equidigital number, since it uses as much as digits as its factorization.

398012413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 398012413 is about 19950.2484445683. The cubic root of 398012413 is about 735.5838839196.

The spelling of 398012413 in words is "three hundred ninety-eight million, twelve thousand, four hundred thirteen".