397482865 has 16 divisors (see below), whose sum is σ = 543887568. Its totient is φ = 276258816.

The previous prime is 397482863. The next prime is 397482889. The reversal of 397482865 is 568284793.

397482865 is nontrivially palindromic in base 16.

It can be written as a sum of positive squares in 8 ways, for example, as 42876304 + 354606561 = 6548^2 + 18831^2 .

It is a cyclic number.

It is not a de Polignac number, because 397482865 - 2¹ = 397482863 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397482863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178752 + ... + 180961.

It is an arithmetic number, because the mean of its divisors is an integer number (33992973).

Almost surely, 2^397482865 is an apocalyptic number.

It is an amenable number.

397482865 is a deficient number, since it is larger than the sum of its proper divisors (146404703).

397482865 is a wasteful number, since it uses less digits than its factorization.

397482865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359748.

The product of its digits is 2903040, while the sum is 52.

The square root of 397482865 is about 19936.9723127660. The cubic root of 397482865 is about 735.2575123104.

The spelling of 397482865 in words is "three hundred ninety-seven million, four hundred eighty-two thousand, eight hundred sixty-five".