398245356853 has 2 divisors, whose sum is σ = 398245356854. Its totient is φ = 398245356852.

The previous prime is 398245356833. The next prime is 398245356863. The reversal of 398245356853 is 358653542893.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 395619614289 + 2625742564 = 628983^2 + 51242^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-398245356853 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 398245356791 and 398245356800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (398245356833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199122678426 + 199122678427.

It is an arithmetic number, because the mean of its divisors is an integer number (199122678427).

Almost surely, 2^398245356853 is an apocalyptic number.

It is an amenable number.

398245356853 is a deficient number, since it is larger than the sum of its proper divisors (1).

398245356853 is an equidigital number, since it uses as much as digits as its factorization.

398245356853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312000, while the sum is 61.

The spelling of 398245356853 in words is "three hundred ninety-eight billion, two hundred forty-five million, three hundred fifty-six thousand, eight hundred fifty-three".