Search a number
-
+
389474 = 21931009
BaseRepresentation
bin1011111000101100010
3201210020222
41133011202
544430344
612203042
73211331
oct1370542
9653228
10389474
11246688
12169482
13108377
14a1d18
157a5ee
hex5f162

389474 has 8 divisors (see below), whose sum is σ = 587820. Its totient is φ = 193536.

The previous prime is 389461. The next prime is 389479. The reversal of 389474 is 474983.

It can be written as a sum of positive squares in 2 ways, for example, as 368449 + 21025 = 607^2 + 145^2 .

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

It is an alternating number because its digits alternate between odd and even.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389479) 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, 119 + ... + 890.

2389474 is an apocalyptic number.

389474 is a deficient number, since it is larger than the sum of its proper divisors (198346).

389474 is a wasteful number, since it uses less digits than its factorization.

389474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204.

The product of its digits is 24192, while the sum is 35.

The square root of 389474 is about 624.0785207007. The cubic root of 389474 is about 73.0285745395.

The spelling of 389474 in words is "three hundred eighty-nine thousand, four hundred seventy-four".

Divisors: 1 2 193 386 1009 2018 194737 389474