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386325809 = 947407947
BaseRepresentation
bin10111000001101…
…101110100110001
3222220221101101022
4113001231310301
51242344411214
6102200145225
712400500212
oct2701556461
9886841338
10386325809
11189086331
12a9468215
136206456c
1439445409
1523db1d8e
hex1706dd31

386325809 has 4 divisors (see below), whose sum is σ = 386734704. Its totient is φ = 385916916.

The previous prime is 386325767. The next prime is 386325817. The reversal of 386325809 is 908523683.

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 386325809 - 28 = 386325553 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 386325809.

It is not an unprimeable number, because it can be changed into a prime (386325829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203027 + ... + 204920.

It is an arithmetic number, because the mean of its divisors is an integer number (96683676).

Almost surely, 2386325809 is an apocalyptic number.

It is an amenable number.

386325809 is a deficient number, since it is larger than the sum of its proper divisors (408895).

386325809 is an equidigital number, since it uses as much as digits as its factorization.

386325809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408894.

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 386325809 is about 19655.1725761948. The cubic root of 386325809 is about 728.3127411135.

The spelling of 386325809 in words is "three hundred eighty-six million, three hundred twenty-five thousand, eight hundred nine".

Divisors: 1 947 407947 386325809