397748509472 has 24 divisors (see below), whose sum is σ = 783100555776. Its totient is φ = 198865828672.

The previous prime is 397748509453. The next prime is 397748509489. The reversal of 397748509472 is 274905847793.

It is a junction number, because it is equal to n+sod(n) for n = 397748509399 and 397748509408.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 541613 + ... + 1043475.

It is an arithmetic number, because the mean of its divisors is an integer number (32629189824).

Almost surely, 2^397748509472 is an apocalyptic number.

397748509472 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

397748509472 is a deficient number, since it is larger than the sum of its proper divisors (385352046304).

397748509472 is a wasteful number, since it uses less digits than its factorization.

397748509472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526640 (or 526632 counting only the distinct ones).

The product of its (nonzero) digits is 106686720, while the sum is 65.

The spelling of 397748509472 in words is "three hundred ninety-seven billion, seven hundred forty-eight million, five hundred nine thousand, four hundred seventy-two".