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387089 is a prime number
BaseRepresentation
bin1011110100000010001
3201122222122
41132200101
544341324
612144025
73201353
oct1364021
9648878
10387089
1124490a
12168015
13107261
14a10d3
1579a5e
hex5e811

387089 has 2 divisors, whose sum is σ = 387090. Its totient is φ = 387088.

The previous prime is 387083. The next prime is 387109. The reversal of 387089 is 980783.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 380689 + 6400 = 617^2 + 80^2 .

It is a cyclic number.

It is not a de Polignac number, because 387089 - 216 = 321553 is a prime.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 387089.

It is not a weakly prime, because it can be changed into another prime (387083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193544 + 193545.

It is an arithmetic number, because the mean of its divisors is an integer number (193545).

2387089 is an apocalyptic number.

It is an amenable number.

387089 is a deficient number, since it is larger than the sum of its proper divisors (1).

387089 is an equidigital number, since it uses as much as digits as its factorization.

387089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 387089 is about 622.1647691729. The cubic root of 387089 is about 72.8792022326.

The spelling of 387089 in words is "three hundred eighty-seven thousand, eighty-nine".