398907071063 has 2 divisors, whose sum is σ = 398907071064. Its totient is φ = 398907071062.

The previous prime is 398907071039. The next prime is 398907071107. The reversal of 398907071063 is 360170709893.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-398907071063 is a prime.

It is a super-2 number, since 2×398907071063² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 398907070996 and 398907071014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (398907071663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199453535531 + 199453535532.

It is an arithmetic number, because the mean of its divisors is an integer number (199453535532).

Almost surely, 2^398907071063 is an apocalyptic number.

398907071063 is a deficient number, since it is larger than the sum of its proper divisors (1).

398907071063 is an equidigital number, since it uses as much as digits as its factorization.

398907071063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1714608, while the sum is 53.

The spelling of 398907071063 in words is "three hundred ninety-eight billion, nine hundred seven million, seventy-one thousand, sixty-three".