398971888712 has 16 divisors (see below), whose sum is σ = 748079074860. Its totient is φ = 199484135424.

The previous prime is 398971888699. The next prime is 398971888717. The reversal of 398971888712 is 217888179893.

It can be written as a sum of positive squares in 2 ways, for example, as 346857390916 + 52114497796 = 588946^2 + 228286^2 .

It is not an unprimeable number, because it can be changed into a prime (398971888717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1394468 + ... + 1656044.

Almost surely, 2^398971888712 is an apocalyptic number.

It is an amenable number.

398971888712 is a deficient number, since it is larger than the sum of its proper divisors (349107186148).

398971888712 is a wasteful number, since it uses less digits than its factorization.

398971888712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452240 (or 452236 counting only the distinct ones).

The product of its digits is 97542144, while the sum is 71.

The spelling of 398971888712 in words is "three hundred ninety-eight billion, nine hundred seventy-one million, eight hundred eighty-eight thousand, seven hundred twelve".