398528047 has 2 divisors, whose sum is σ = 398528048. Its totient is φ = 398528046.

The previous prime is 398528017. The next prime is 398528051. The reversal of 398528047 is 740825893.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 398528047 - 2⁷ = 398527919 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 398527988 and 398528006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (398528017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199264023 + 199264024.

It is an arithmetic number, because the mean of its divisors is an integer number (199264024).

Almost surely, 2^398528047 is an apocalyptic number.

398528047 is a deficient number, since it is larger than the sum of its proper divisors (1).

398528047 is an equidigital number, since it uses as much as digits as its factorization.

398528047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 398528047 is about 19963.1672587293. The cubic root of 398528047 is about 735.9014019768.

The spelling of 398528047 in words is "three hundred ninety-eight million, five hundred twenty-eight thousand, forty-seven".