397048385 has 8 divisors (see below), whose sum is σ = 476577000. Its totient is φ = 317559424.

The previous prime is 397048381. The next prime is 397048397. The reversal of 397048385 is 583840793.

It can be written as a sum of positive squares in 4 ways, for example, as 9431041 + 387617344 = 3071^2 + 19688^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 397048385 - 2² = 397048381 is a prime.

It is a super-2 number, since 2×397048385² = 315294840062216450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (397048381) 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, 20741 + ... + 34989.

It is an arithmetic number, because the mean of its divisors is an integer number (59572125).

Almost surely, 2^397048385 is an apocalyptic number.

It is an amenable number.

397048385 is a deficient number, since it is larger than the sum of its proper divisors (79528615).

397048385 is a wasteful number, since it uses less digits than its factorization.

397048385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19827.

The product of its (nonzero) digits is 725760, while the sum is 47.

The square root of 397048385 is about 19926.0729949481. The cubic root of 397048385 is about 734.9895165642.

The spelling of 397048385 in words is "three hundred ninety-seven million, forty-eight thousand, three hundred eighty-five".