397552847 has 4 divisors (see below), whose sum is σ = 399550800. Its totient is φ = 395554896.

The previous prime is 397552823. The next prime is 397552853. The reversal of 397552847 is 748255793.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 397552847 - 2¹⁴ = 397536463 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 397552795 and 397552804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397552807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 998678 + ... + 999075.

It is an arithmetic number, because the mean of its divisors is an integer number (99887700).

Almost surely, 2^397552847 is an apocalyptic number.

397552847 is a deficient number, since it is larger than the sum of its proper divisors (1997953).

397552847 is a wasteful number, since it uses less digits than its factorization.

397552847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997952.

The product of its digits is 2116800, while the sum is 50.

The square root of 397552847 is about 19938.7273164563. The cubic root of 397552847 is about 735.3006603102.

The spelling of 397552847 in words is "three hundred ninety-seven million, five hundred fifty-two thousand, eight hundred forty-seven".