398544982 has 16 divisors (see below), whose sum is σ = 669791952. Its totient is φ = 176260320.

The previous prime is 398544977. The next prime is 398544983. The reversal of 398544982 is 289445893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398544983) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 243993 + ... + 245620.

It is an arithmetic number, because the mean of its divisors is an integer number (41861997).

Almost surely, 2^398544982 is an apocalyptic number.

398544982 is a deficient number, since it is larger than the sum of its proper divisors (271246970).

398544982 is a wasteful number, since it uses less digits than its factorization.

398544982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489663.

The product of its digits is 2488320, while the sum is 52.

The square root of 398544982 is about 19963.5914103650. The cubic root of 398544982 is about 735.9118255960.

It can be divided in two parts, 39854 and 4982, that multiplied together give a triangular number (198552628 = T₁₉₉₂₇).

The spelling of 398544982 in words is "three hundred ninety-eight million, five hundred forty-four thousand, nine hundred eighty-two".