383397647 has 4 divisors (see below), whose sum is σ = 383879496. Its totient is φ = 382915800.

The previous prime is 383397629. The next prime is 383397653. The reversal of 383397647 is 746793383.

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 383397647 - 2²⁶ = 316288783 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 383397595 and 383397604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (383397697) 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, 239729 + ... + 241322.

It is an arithmetic number, because the mean of its divisors is an integer number (95969874).

Almost surely, 2^383397647 is an apocalyptic number.

383397647 is a deficient number, since it is larger than the sum of its proper divisors (481849).

383397647 is an equidigital number, since it uses as much as digits as its factorization.

383397647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481848.

The product of its digits is 2286144, while the sum is 50.

The square root of 383397647 is about 19580.5425614307. The cubic root of 383397647 is about 726.4679868369.

The spelling of 383397647 in words is "three hundred eighty-three million, three hundred ninety-seven thousand, six hundred forty-seven".