397852057 has 4 divisors (see below), whose sum is σ = 398960640. Its totient is φ = 396743476.

The previous prime is 397852051. The next prime is 397852061. The reversal of 397852057 is 750258793.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 397852057 - 2¹⁹ = 397327769 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 397851998 and 397852016.

It is not an unprimeable number, because it can be changed into a prime (397852051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 553753 + ... + 554470.

It is an arithmetic number, because the mean of its divisors is an integer number (99740160).

Almost surely, 2^397852057 is an apocalyptic number.

It is an amenable number.

397852057 is a deficient number, since it is larger than the sum of its proper divisors (1108583).

397852057 is a wasteful number, since it uses less digits than its factorization.

397852057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108582.

The product of its (nonzero) digits is 529200, while the sum is 46.

The square root of 397852057 is about 19946.2291423717. The cubic root of 397852057 is about 735.4850837063.

The spelling of 397852057 in words is "three hundred ninety-seven million, eight hundred fifty-two thousand, fifty-seven".