398592685088629 has 2 divisors, whose sum is σ = 398592685088630. Its totient is φ = 398592685088628.

The previous prime is 398592685088623. The next prime is 398592685088677. The reversal of 398592685088629 is 926880586295893.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 382319730788004 + 16272954300625 = 19552998^2 + 4033975^2 .

It is a cyclic number.

It is not a de Polignac number, because 398592685088629 - 2³⁹ = 398042929274741 is a prime.

It is a super-2 number, since 2×398592685088629² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 398592685088629.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (398592685088623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199296342544314 + 199296342544315.

It is an arithmetic number, because the mean of its divisors is an integer number (199296342544315).

Almost surely, 2^{398592685088629} is an apocalyptic number.

It is an amenable number.

398592685088629 is a deficient number, since it is larger than the sum of its proper divisors (1).

398592685088629 is an equidigital number, since it uses as much as digits as its factorization.

398592685088629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32248627200, while the sum is 88.

The spelling of 398592685088629 in words is "three hundred ninety-eight trillion, five hundred ninety-two billion, six hundred eighty-five million, eighty-eight thousand, six hundred twenty-nine".