Search a number
-
+
8934379138 = 2171217215921
BaseRepresentation
bin10000101001000011…
…11100111010000010
3212001122121111010001
420110201330322002
5121244200113023
64034314430214
7434254653406
oct102441747202
925048544101
108934379138
113875251313
12189413236a
13ac4cb5a99
1460a813106
153745686ad
hex21487ce82

8934379138 has 16 divisors (see below), whose sum is σ = 14201621784. Its totient is φ = 4200939520.

The previous prime is 8934379127. The next prime is 8934379147. The reversal of 8934379138 is 8319734398.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8933463289 + 915849 = 94517^2 + 957^2 .

It is a super-4 number, since 4×89343791384 (a number of 41 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66583 + ... + 149338.

Almost surely, 28934379138 is an apocalyptic number.

8934379138 is a deficient number, since it is larger than the sum of its proper divisors (5267242646).

8934379138 is a wasteful number, since it uses less digits than its factorization.

8934379138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217157.

The product of its digits is 3919104, while the sum is 55.

The square root of 8934379138 is about 94521.8447661703. The cubic root of 8934379138 is about 2075.0160457849.

The spelling of 8934379138 in words is "eight billion, nine hundred thirty-four million, three hundred seventy-nine thousand, one hundred thirty-eight".

Divisors: 1 2 17 34 1217 2434 20689 41378 215921 431842 3670657 7341314 262775857 525551714 4467189569 8934379138