398687503363 has 2 divisors, whose sum is σ = 398687503364. Its totient is φ = 398687503362.

The previous prime is 398687503297. The next prime is 398687503369. The reversal of 398687503363 is 363305786893.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 398687503363 - 2²¹ = 398685406211 is a prime.

It is not a weakly prime, because it can be changed into another prime (398687503369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199343751681 + 199343751682.

It is an arithmetic number, because the mean of its divisors is an integer number (199343751682).

Almost surely, 2^398687503363 is an apocalyptic number.

398687503363 is a deficient number, since it is larger than the sum of its proper divisors (1).

398687503363 is an equidigital number, since it uses as much as digits as its factorization.

398687503363 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58786560, while the sum is 61.

The spelling of 398687503363 in words is "three hundred ninety-eight billion, six hundred eighty-seven million, five hundred three thousand, three hundred sixty-three".