398826081659 has 2 divisors, whose sum is σ = 398826081660. Its totient is φ = 398826081658.

The previous prime is 398826081653. The next prime is 398826081713. The reversal of 398826081659 is 956180628893.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 398826081659 - 2¹² = 398826077563 is a prime.

It is a super-2 number, since 2×398826081659² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 398826081595 and 398826081604.

It is not a weakly prime, because it can be changed into another prime (398826081653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199413040829 + 199413040830.

It is an arithmetic number, because the mean of its divisors is an integer number (199413040830).

Almost surely, 2^398826081659 is an apocalyptic number.

398826081659 is a deficient number, since it is larger than the sum of its proper divisors (1).

398826081659 is an equidigital number, since it uses as much as digits as its factorization.

398826081659 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 44789760, while the sum is 65.

The spelling of 398826081659 in words is "three hundred ninety-eight billion, eight hundred twenty-six million, eighty-one thousand, six hundred fifty-nine".