398142663982 has 16 divisors (see below), whose sum is σ = 682657961472. Its totient is φ = 170600650200.

The previous prime is 398142663979. The next prime is 398142663983. The reversal of 398142663982 is 289366241893.

It is a self number, because there is not a number n which added to its sum of digits gives 398142663982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398142663983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2582418 + ... + 2732245.

It is an arithmetic number, because the mean of its divisors is an integer number (42666122592).

Almost surely, 2^398142663982 is an apocalyptic number.

398142663982 is a deficient number, since it is larger than the sum of its proper divisors (284515297490).

398142663982 is a wasteful number, since it uses less digits than its factorization.

398142663982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5320023.

The product of its digits is 26873856, while the sum is 61.

The spelling of 398142663982 in words is "three hundred ninety-eight billion, one hundred forty-two million, six hundred sixty-three thousand, nine hundred eighty-two".