397748509338 has 16 divisors (see below), whose sum is σ = 795595898016. Its totient is φ = 132566356560.

The previous prime is 397748509297. The next prime is 397748509357. The reversal of 397748509338 is 833905847793.

It is a super-3 number, since 3×397748509338³ (a number of 36 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4067628 + ... + 4164263.

It is an arithmetic number, because the mean of its divisors is an integer number (49724743626).

Almost surely, 2^397748509338 is an apocalyptic number.

397748509338 is an abundant number, since it is smaller than the sum of its proper divisors (397847388678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

397748509338 is a wasteful number, since it uses less digits than its factorization.

397748509338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8239949.

The product of its (nonzero) digits is 137168640, while the sum is 66.

The spelling of 397748509338 in words is "three hundred ninety-seven billion, seven hundred forty-eight million, five hundred nine thousand, three hundred thirty-eight".