398576671 has 2 divisors, whose sum is σ = 398576672. Its totient is φ = 398576670.

The previous prime is 398576669. The next prime is 398576681. The reversal of 398576671 is 176675893.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 398576671 - 2¹ = 398576669 is a prime.

Together with 398576669, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (398576681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199288335 + 199288336.

It is an arithmetic number, because the mean of its divisors is an integer number (199288336).

Almost surely, 2^398576671 is an apocalyptic number.

398576671 is a deficient number, since it is larger than the sum of its proper divisors (1).

398576671 is an equidigital number, since it uses as much as digits as its factorization.

398576671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1905120, while the sum is 52.

The square root of 398576671 is about 19964.3850644091. The cubic root of 398576671 is about 735.9313296192.

It can be divided in two parts, 3985 and 76671, that added together give a square (80656 = 284²).

The spelling of 398576671 in words is "three hundred ninety-eight million, five hundred seventy-six thousand, six hundred seventy-one".