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389001 = 31271021
BaseRepresentation
bin1011110111110001001
3201202121110
41132332021
544422001
612200533
73210054
oct1367611
9652543
10389001
11246298
12169149
131080a2
14a1a9b
157a3d6
hex5ef89

389001 has 8 divisors (see below), whose sum is σ = 523264. Its totient is φ = 257040.

The previous prime is 388991. The next prime is 389003. The reversal of 389001 is 100983.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 389001 - 26 = 388937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (389003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130 + ... + 891.

It is an arithmetic number, because the mean of its divisors is an integer number (65408).

2389001 is an apocalyptic number.

It is an amenable number.

389001 is a deficient number, since it is larger than the sum of its proper divisors (134263).

389001 is a wasteful number, since it uses less digits than its factorization.

389001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 389001 is about 623.6994468492. The cubic root of 389001 is about 72.9989991731.

Adding to 389001 its reverse (100983), we get a palindrome (489984).

The spelling of 389001 in words is "three hundred eighty-nine thousand, one".

Divisors: 1 3 127 381 1021 3063 129667 389001