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3985775689 = 722923112
BaseRepresentation
bin1110110110010010…
…0001110001001001
3101021202221101100211
43231210201301021
531130324310224
61455301001121
7200525351200
oct35544416111
911252841324
103985775689
1117659592a5
129329b31a1
134b69b116c
1429b4d0237
15184db5894
hexed921c49

3985775689 has 27 divisors (see below), whose sum is σ = 4817397351. Its totient is φ = 3287966640.

The previous prime is 3985775683. The next prime is 3985775701. The reversal of 3985775689 is 9865775893.

The square root of 3985775689 is 63133.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2090044089 + 1895731600 = 45717^2 + 43540^2 .

It is not a de Polignac number, because 3985775689 - 25 = 3985775657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3985775683) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 12815844 + ... + 12816154.

Almost surely, 23985775689 is an apocalyptic number.

3985775689 is the 63133-rd square number.

3985775689 is the 31567-th centered octagonal number.

It is an amenable number.

3985775689 is a deficient number, since it is larger than the sum of its proper divisors (831621662).

3985775689 is an frugal number, since it uses more digits than its factorization.

3985775689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694 (or 347 counting only the distinct ones).

The product of its digits is 114307200, while the sum is 67.

The cubic root of 3985775689 is about 1585.5171766109.

The spelling of 3985775689 in words is "three billion, nine hundred eighty-five million, seven hundred seventy-five thousand, six hundred eighty-nine".