398958486956 has 24 divisors (see below), whose sum is σ = 730177507584. Its totient is φ = 190375499600.

The previous prime is 398958486937. The next prime is 398958486959. The reversal of 398958486956 is 659684859893.

It is not an unprimeable number, because it can be changed into a prime (398958486959) 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, 4853720 + ... + 4935231.

It is an arithmetic number, because the mean of its divisors is an integer number (30424062816).

Almost surely, 2^398958486956 is an apocalyptic number.

It is an amenable number.

398958486956 is a deficient number, since it is larger than the sum of its proper divisors (331219020628).

398958486956 is a wasteful number, since it uses less digits than its factorization.

398958486956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9789421 (or 9789419 counting only the distinct ones).

The product of its digits is 4031078400, while the sum is 80.

The spelling of 398958486956 in words is "three hundred ninety-eight billion, nine hundred fifty-eight million, four hundred eighty-six thousand, nine hundred fifty-six".