398536982 has 4 divisors (see below), whose sum is σ = 597805476. Its totient is φ = 199268490.

The previous prime is 398536979. The next prime is 398536997. The reversal of 398536982 is 289635893.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99634244 + ... + 99634247.

It is an arithmetic number, because the mean of its divisors is an integer number (149451369).

Almost surely, 2^398536982 is an apocalyptic number.

398536982 is a deficient number, since it is larger than the sum of its proper divisors (199268494).

398536982 is a wasteful number, since it uses less digits than its factorization.

398536982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199268493.

The product of its digits is 2799360, while the sum is 53.

The square root of 398536982 is about 19963.3910446096. The cubic root of 398536982 is about 735.9069015729.

The spelling of 398536982 in words is "three hundred ninety-eight million, five hundred thirty-six thousand, nine hundred eighty-two".