398519960357 has 2 divisors, whose sum is σ = 398519960358. Its totient is φ = 398519960356.

The previous prime is 398519960351. The next prime is 398519960389. The reversal of 398519960357 is 753069915893.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 224530031716 + 173989928641 = 473846^2 + 417121^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-398519960357 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 398519960293 and 398519960302.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (398519960351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199259980178 + 199259980179.

It is an arithmetic number, because the mean of its divisors is an integer number (199259980179).

Almost surely, 2^398519960357 is an apocalyptic number.

It is an amenable number.

398519960357 is a deficient number, since it is larger than the sum of its proper divisors (1).

398519960357 is an equidigital number, since it uses as much as digits as its factorization.

398519960357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55112400, while the sum is 65.

The spelling of 398519960357 in words is "three hundred ninety-eight billion, five hundred nineteen million, nine hundred sixty thousand, three hundred fifty-seven".