398073539 has 2 divisors, whose sum is σ = 398073540. Its totient is φ = 398073538.

The previous prime is 398073527. The next prime is 398073583. The reversal of 398073539 is 935370893.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 398073539 - 2¹⁶ = 398008003 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 398073493 and 398073502.

It is not a weakly prime, because it can be changed into another prime (398073589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199036769 + 199036770.

It is an arithmetic number, because the mean of its divisors is an integer number (199036770).

Almost surely, 2^398073539 is an apocalyptic number.

398073539 is a deficient number, since it is larger than the sum of its proper divisors (1).

398073539 is an equidigital number, since it uses as much as digits as its factorization.

398073539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 612360, while the sum is 47.

The square root of 398073539 is about 19951.7803466257. The cubic root of 398073539 is about 735.6215385232.

The spelling of 398073539 in words is "three hundred ninety-eight million, seventy-three thousand, five hundred thirty-nine".