398882242277 has 2 divisors, whose sum is σ = 398882242278. Its totient is φ = 398882242276.

The previous prime is 398882242249. The next prime is 398882242327. The reversal of 398882242277 is 772242288893.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 368092170436 + 30790071841 = 606706^2 + 175471^2 .

It is a cyclic number.

It is not a de Polignac number, because 398882242277 - 2²⁶ = 398815133413 is a prime.

It is a super-2 number, since 2×398882242277² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (398882242247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199441121138 + 199441121139.

It is an arithmetic number, because the mean of its divisors is an integer number (199441121139).

Almost surely, 2^398882242277 is an apocalyptic number.

It is an amenable number.

398882242277 is a deficient number, since it is larger than the sum of its proper divisors (1).

398882242277 is an equidigital number, since it uses as much as digits as its factorization.

398882242277 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43352064, while the sum is 62.

The spelling of 398882242277 in words is "three hundred ninety-eight billion, eight hundred eighty-two million, two hundred forty-two thousand, two hundred seventy-seven".