Search a number
-
+
2979444905 = 51795336781
BaseRepresentation
bin1011000110010110…
…1011100010101001
321200122100111001022
42301211223202221
522100214214110
61211351502225
7133555602203
oct26145534251
97618314038
102979444905
111299901068
126b1987975
13386368568
142039b5773
15126883755
hexb196b8a9

2979444905 has 16 divisors (see below), whose sum is σ = 3789723024. Its totient is φ = 2240931840.

The previous prime is 2979444877. The next prime is 2979444907. The reversal of 2979444905 is 5094449792.

2979444905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 290089024 + 2689355881 = 17032^2 + 51859^2 .

It is not a de Polignac number, because 2979444905 - 26 = 2979444841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2979444907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62615 + ... + 99395.

It is an arithmetic number, because the mean of its divisors is an integer number (236857689).

Almost surely, 22979444905 is an apocalyptic number.

It is an amenable number.

2979444905 is a deficient number, since it is larger than the sum of its proper divisors (810278119).

2979444905 is a wasteful number, since it uses less digits than its factorization.

2979444905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37756.

The product of its (nonzero) digits is 3265920, while the sum is 53.

The square root of 2979444905 is about 54584.2917422220. The cubic root of 2979444905 is about 1438.9480654896.

The spelling of 2979444905 in words is "two billion, nine hundred seventy-nine million, four hundred forty-four thousand, nine hundred five".

Divisors: 1 5 17 85 953 4765 16201 36781 81005 183905 625277 3126385 35052293 175261465 595888981 2979444905